1<?xml version="1.0" encoding="UTF-8"?>
2<sbml xmlns="http://www.sbml.org/sbml/level3/version1/core" xmlns:fbc="http://www.sbml.org/sbml/level3/version1/fbc/version2" level="3" version="1" fbc:required="false">
3  <model fbc:strict="false" id="m" substanceUnits="mole" timeUnits="second" volumeUnits="litre" extentUnits="mole">
4    <listOfUnitDefinitions>
5      <unitDefinition id="vol_per_time">
6        <listOfUnits>
7          <unit kind="litre" exponent="1" scale="0" multiplier="1"/>
8          <unit kind="second" exponent="-1" scale="0" multiplier="1"/>
9        </listOfUnits>
10      </unitDefinition>
11    </listOfUnitDefinitions>
12    <listOfCompartments>
13      <compartment id="comp1" spatialDimensions="3" size="1" constant="true"/>
14    </listOfCompartments>
15    <listOfSpecies>
16      <species id="S" compartment="comp1" initialAmount="1" hasOnlySubstanceUnits="false" boundaryCondition="false" constant="false" fbc:charge="2" fbc:chemicalFormula="S20"/>
17      <species id="S1" compartment="comp1" initialAmount="1" hasOnlySubstanceUnits="false" boundaryCondition="false" constant="false" fbc:charge="2" fbc:chemicalFormula="S20"/>
18      <species id="S2" compartment="comp1" initialAmount="1" hasOnlySubstanceUnits="false" boundaryCondition="false" constant="false"/>
19      <species id="S3" compartment="comp1" initialAmount="1" hasOnlySubstanceUnits="false" boundaryCondition="false" constant="false" fbc:charge="2" fbc:chemicalFormula="S20"/>
20      <species id="S4" compartment="comp1" initialAmount="1" hasOnlySubstanceUnits="false" boundaryCondition="false" constant="false" fbc:charge="2" fbc:chemicalFormula="S20"/>
21    </listOfSpecies>
22    <listOfReactions>
23      <reaction id="R1" reversible="false" fast="false">
24        <listOfReactants>
25          <speciesReference species="S1" constant="false"/>
26        </listOfReactants>
27        <listOfProducts>
28          <speciesReference species="S2" constant="true"/>
29        </listOfProducts>
30        <kineticLaw>
31          <math xmlns="http://www.w3.org/1998/Math/MathML">
32            <apply>
33              <times/>
34              <ci> k </ci>
35              <ci> S1 </ci>
36            </apply>
37          </math>
38          <listOfLocalParameters>
39            <localParameter id="k" value="0.1" units="vol_per_time"/>
40          </listOfLocalParameters>
41        </kineticLaw>
42      </reaction>
43      <reaction id="R2" reversible="false" fast="false">
44        <listOfReactants>
45          <speciesReference species="S2" constant="false"/>
46        </listOfReactants>
47        <listOfProducts>
48          <speciesReference species="S4" constant="true"/>
49        </listOfProducts>
50        <kineticLaw>
51          <math xmlns="http://www.w3.org/1998/Math/MathML">
52            <apply>
53              <times/>
54              <ci> k </ci>
55              <ci> S2 </ci>
56            </apply>
57          </math>
58          <listOfLocalParameters>
59            <localParameter id="k" value="0.1" units="vol_per_time"/>
60          </listOfLocalParameters>
61        </kineticLaw>
62      </reaction>
63    </listOfReactions>
64
65    <fbc:listOfObjectives fbc:activeObjective="c">
66      <fbc:objective fbc:id="c" fbc:type="maximize">
67        <fbc:listOfFluxes>
68          <fbc:fluxObjective fbc:reaction="R1" fbc:coefficient="1"/>
69          <fbc:fluxObjective fbc:reaction="R2" fbc:coefficient="1"/>
70        </fbc:listOfFluxes>
71      </fbc:objective>
72    </fbc:listOfObjectives>
73
74    <fbc:listOfObjectives fbc:activeObjective="c">
75      <fbc:objective fbc:id="c2" fbc:type="maximize">
76        <fbc:listOfFluxes>
77          <fbc:fluxObjective fbc:reaction="R1" fbc:coefficient="1"/>
78          <fbc:fluxObjective fbc:reaction="R2" fbc:coefficient="1"/>
79        </fbc:listOfFluxes>
80      </fbc:objective>
81    </fbc:listOfObjectives>
82  </model>
83</sbml>
84