=
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
"<sbml xmlns=\"http://www.sbml.org/sbml/level2\" level=\"2\" version=\"1\">\n"
" <model id=\"Model_1\" name=\"New Model\">\n"
" <listOfUnitDefinitions>\n"
" <unitDefinition id=\"volume\">\n"
" <listOfUnits>\n"
" <unit kind=\"litre\" scale=\"-3\"/>\n"
" </listOfUnits>\n"
" </unitDefinition>\n"
" <unitDefinition id=\"substance\">\n"
" <listOfUnits>\n"
" <unit kind=\"mole\" scale=\"-3\"/>\n"
" </listOfUnits>\n"
" </unitDefinition>\n"
" </listOfUnitDefinitions>\n"
" <listOfParameters>\n"
" <parameter id=\"parameter_1\" name=\"A\" value=\"12\" constant=\"true\"/>\n"
" </listOfParameters>\n"
" </model>\n"
"</sbml>\n"