diff --git a/converter-sbml/src/main/java/lcsb/mapviewer/converter/model/sbml/species/SbmlSpeciesExporter.java b/converter-sbml/src/main/java/lcsb/mapviewer/converter/model/sbml/species/SbmlSpeciesExporter.java
index ee081b42f441018b9a544293bd6de2f7b29bbf57..5fbcbaff3416b1f46b479d1522a78b758c597058 100644
--- a/converter-sbml/src/main/java/lcsb/mapviewer/converter/model/sbml/species/SbmlSpeciesExporter.java
+++ b/converter-sbml/src/main/java/lcsb/mapviewer/converter/model/sbml/species/SbmlSpeciesExporter.java
@@ -412,6 +412,14 @@ public class SbmlSpeciesExporter extends SbmlElementExporter<Species, org.sbml.j
         multiDistinguisher += "\n" + StringUtils.join(modifications, ",");
       }
       multiDistinguisher += "\n" + element.getPositionToCompartment();
+      if (element instanceof Complex) {
+        List<String> complexChildIds = new ArrayList<>();
+        for (Species child : ((Complex) element).getAllChildren()) {
+          complexChildIds.add(getSbmlIdKey(child));
+        }
+        Collections.sort(complexChildIds);
+        multiDistinguisher += "\n" + StringUtils.join(complexChildIds, "\n");
+      }
     }
     String result = element.getClass().getSimpleName() + "\n" + element.getName() + "\n" + compartmentName + "\n"
         + complexName
diff --git a/converter-sbml/testFiles/cd_for_multi/different_complex_with_the_same_name.xml b/converter-sbml/testFiles/cd_for_multi/different_complex_with_the_same_name.xml
new file mode 100644
index 0000000000000000000000000000000000000000..f2ea7d3f6de9efcfded42954ad2efd19a7a113dc
--- /dev/null
+++ b/converter-sbml/testFiles/cd_for_multi/different_complex_with_the_same_name.xml
@@ -0,0 +1,168 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<sbml xmlns="http://www.sbml.org/sbml/level2/version4" xmlns:celldesigner="http://www.sbml.org/2001/ns/celldesigner" level="2" version="4">
+<model metaid="untitled" id="untitled">
+<annotation>
+<celldesigner:extension>
+<celldesigner:modelVersion>4.0</celldesigner:modelVersion>
+<celldesigner:modelDisplay sizeX="600" sizeY="400"/>
+<celldesigner:listOfIncludedSpecies>
+<celldesigner:species id="s4" name="s3">
+<celldesigner:notes>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title/>
+</head>
+<body/>
+</html>
+</celldesigner:notes>
+<celldesigner:annotation>
+<celldesigner:complexSpecies>s3</celldesigner:complexSpecies>
+<celldesigner:speciesIdentity>
+<celldesigner:class>PROTEIN</celldesigner:class>
+<celldesigner:proteinReference>pr1</celldesigner:proteinReference>
+</celldesigner:speciesIdentity>
+</celldesigner:annotation>
+</celldesigner:species>
+</celldesigner:listOfIncludedSpecies>
+<celldesigner:listOfCompartmentAliases/>
+<celldesigner:listOfComplexSpeciesAliases>
+<celldesigner:complexSpeciesAlias id="csa1" species="s1">
+<celldesigner:activity>inactive</celldesigner:activity>
+<celldesigner:bounds x="130.0" y="102.0" w="100.0" h="120.0"/>
+<celldesigner:font size="12"/>
+<celldesigner:view state="usual"/>
+<celldesigner:backupSize w="0.0" h="0.0"/>
+<celldesigner:backupView state="none"/>
+<celldesigner:usualView>
+<celldesigner:innerPosition x="0.0" y="0.0"/>
+<celldesigner:boxSize width="100.0" height="120.0"/>
+<celldesigner:singleLine width="2.0"/>
+<celldesigner:paint color="fff7f7f7" scheme="Color"/>
+</celldesigner:usualView>
+<celldesigner:briefView>
+<celldesigner:innerPosition x="0.0" y="0.0"/>
+<celldesigner:boxSize width="80.0" height="60.0"/>
+<celldesigner:singleLine width="2.0"/>
+<celldesigner:paint color="fff7f7f7" scheme="Color"/>
+</celldesigner:briefView>
+<celldesigner:info state="empty" angle="-1.5707963267948966"/>
+</celldesigner:complexSpeciesAlias>
+<celldesigner:complexSpeciesAlias id="csa2" species="s3">
+<celldesigner:activity>inactive</celldesigner:activity>
+<celldesigner:bounds x="252.0" y="102.0" w="100.0" h="120.0"/>
+<celldesigner:font size="12"/>
+<celldesigner:view state="usual"/>
+<celldesigner:backupSize w="0.0" h="0.0"/>
+<celldesigner:backupView state="none"/>
+<celldesigner:usualView>
+<celldesigner:innerPosition x="0.0" y="0.0"/>
+<celldesigner:boxSize width="100.0" height="120.0"/>
+<celldesigner:singleLine width="2.0"/>
+<celldesigner:paint color="fff7f7f7" scheme="Color"/>
+</celldesigner:usualView>
+<celldesigner:briefView>
+<celldesigner:innerPosition x="0.0" y="0.0"/>
+<celldesigner:boxSize width="80.0" height="60.0"/>
+<celldesigner:singleLine width="2.0"/>
+<celldesigner:paint color="fff7f7f7" scheme="Color"/>
+</celldesigner:briefView>
+<celldesigner:info state="empty" angle="-1.5707963267948966"/>
+</celldesigner:complexSpeciesAlias>
+</celldesigner:listOfComplexSpeciesAliases>
+<celldesigner:listOfSpeciesAliases>
+<celldesigner:speciesAlias id="sa1" species="s4" complexSpeciesAlias="csa2">
+<celldesigner:activity>inactive</celldesigner:activity>
+<celldesigner:bounds x="263.0" y="124.0" w="80.0" h="40.0"/>
+<celldesigner:font size="12"/>
+<celldesigner:view state="usual"/>
+<celldesigner:usualView>
+<celldesigner:innerPosition x="11.0" y="22.0"/>
+<celldesigner:boxSize width="80.0" height="40.0"/>
+<celldesigner:singleLine width="1.0"/>
+<celldesigner:paint color="ffccffcc" scheme="Color"/>
+</celldesigner:usualView>
+<celldesigner:briefView>
+<celldesigner:innerPosition x="0.0" y="0.0"/>
+<celldesigner:boxSize width="80.0" height="60.0"/>
+<celldesigner:singleLine width="0.0"/>
+<celldesigner:paint color="3fff0000" scheme="Color"/>
+</celldesigner:briefView>
+<celldesigner:info state="empty" angle="-1.5707963267948966"/>
+</celldesigner:speciesAlias>
+</celldesigner:listOfSpeciesAliases>
+<celldesigner:listOfGroups/>
+<celldesigner:listOfProteins>
+<celldesigner:protein id="pr1" name="s3" type="GENERIC"/>
+</celldesigner:listOfProteins>
+<celldesigner:listOfGenes/>
+<celldesigner:listOfRNAs/>
+<celldesigner:listOfAntisenseRNAs/>
+<celldesigner:listOfLayers/>
+<celldesigner:listOfBlockDiagrams/>
+</celldesigner:extension>
+</annotation>
+<listOfUnitDefinitions>
+<unitDefinition metaid="substance" id="substance" name="substance">
+<listOfUnits>
+<unit metaid="CDMT00001" kind="mole"/>
+</listOfUnits>
+</unitDefinition>
+<unitDefinition metaid="volume" id="volume" name="volume">
+<listOfUnits>
+<unit metaid="CDMT00002" kind="litre"/>
+</listOfUnits>
+</unitDefinition>
+<unitDefinition metaid="area" id="area" name="area">
+<listOfUnits>
+<unit metaid="CDMT00003" kind="metre" exponent="2"/>
+</listOfUnits>
+</unitDefinition>
+<unitDefinition metaid="length" id="length" name="length">
+<listOfUnits>
+<unit metaid="CDMT00004" kind="metre"/>
+</listOfUnits>
+</unitDefinition>
+<unitDefinition metaid="time" id="time" name="time">
+<listOfUnits>
+<unit metaid="CDMT00005" kind="second"/>
+</listOfUnits>
+</unitDefinition>
+</listOfUnitDefinitions>
+<listOfCompartments>
+<compartment metaid="default" id="default" size="1" units="volume"/>
+</listOfCompartments>
+<listOfSpecies>
+<species metaid="s1" id="s1" name="s1" compartment="default" initialAmount="0">
+<annotation>
+<celldesigner:extension>
+<celldesigner:positionToCompartment>inside</celldesigner:positionToCompartment>
+<celldesigner:speciesIdentity>
+<celldesigner:class>COMPLEX</celldesigner:class>
+<celldesigner:name>s1</celldesigner:name>
+</celldesigner:speciesIdentity>
+</celldesigner:extension>
+</annotation>
+</species>
+<species metaid="s3" id="s3" name="s1" compartment="default" initialAmount="0">
+<annotation>
+<celldesigner:extension>
+<celldesigner:positionToCompartment>inside</celldesigner:positionToCompartment>
+<celldesigner:speciesIdentity>
+<celldesigner:class>COMPLEX</celldesigner:class>
+<celldesigner:name>s1</celldesigner:name>
+</celldesigner:speciesIdentity>
+</celldesigner:extension>
+<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:vCard="http://www.w3.org/2001/vcard-rdf/3.0#" xmlns:bqbiol="http://biomodels.net/biology-qualifiers/" xmlns:bqmodel="http://biomodels.net/model-qualifiers/">
+<rdf:Description rdf:about="#s3">
+<bqmodel:is>
+<rdf:Bag>
+<rdf:li rdf:resource="urn:miriam:pubmed:12345"/>
+</rdf:Bag>
+</bqmodel:is>
+</rdf:Description>
+</rdf:RDF>
+</annotation>
+</species>
+</listOfSpecies>
+</model>
+</sbml>