<?xml version="1.0" encoding="UTF-8"?>
<sbml xmlns="http://www.sbml.org/sbml/level3/version1/core" level="3" version="1"
      xmlns:comp="http://www.sbml.org/sbml/level3/version1/comp/version1" comp:required="true">
  <model>
    <listOfCompartments>
      <compartment id="compartment" spatialDimensions="3" size="1" constant="true">
        <comp:listOfReplacedElements>
          <comp:replacedElement comp:idRef="compartment" comp:submodelRef="A"/>
          <comp:replacedElement comp:idRef="compartment" comp:submodelRef="B"/>
        </comp:listOfReplacedElements>
      </compartment>
    </listOfCompartments>
    <listOfSpecies>
      <species id="S" compartment="compartment" hasOnlySubstanceUnits="false"
                      boundaryCondition="false" constant="false">
        <comp:listOfReplacedElements>
          <comp:replacedElement comp:idRef="S" comp:submodelRef="A"/>
          <comp:replacedElement comp:idRef="S" comp:submodelRef="B"/>
        </comp:listOfReplacedElements>
      </species>
    </listOfSpecies>
    <comp:listOfSubmodels>
      <comp:submodel comp:id="A" comp:modelRef="ExtMod1"/>
      <comp:submodel comp:id="B" comp:modelRef="ExtMod1"/>
    </comp:listOfSubmodels>
  </model>
  <comp:listOfExternalModelDefinitions>
    <comp:externalModelDefinition comp:id="ExtMod1" comp:source="enzyme_model.xml"
                                  comp:modelRef="enzyme"/>
  </comp:listOfExternalModelDefinitions>
</sbml>
