/usr/share/SBMLToolbox/Convenience/ is in sbmltoolbox 4.1.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/SBMLToolbox/Convenience/CheckValidUnitKind.m
/usr/share/SBMLToolbox/Convenience/Contents.m
/usr/share/SBMLToolbox/Convenience/LoseWhiteSpace.m
/usr/share/SBMLToolbox/Convenience/PairBrackets.m
/usr/share/SBMLToolbox/Convenience/Rearrange.m
/usr/share/SBMLToolbox/Convenience/RemoveDuplicates.m
/usr/share/SBMLToolbox/Convenience/Substitute.m
/usr/share/SBMLToolbox/Convenience/SubstituteConstants.m
/usr/share/SBMLToolbox/Convenience/SubstituteFunction.m
/usr/share/SBMLToolbox/Convenience/Test/
/usr/share/SBMLToolbox/Convenience/Test/TestCheckValidUnitKind.m
/usr/share/SBMLToolbox/Convenience/Test/TestLoseWhiteSpace.m
/usr/share/SBMLToolbox/Convenience/Test/TestMatchFunctionName.m
/usr/share/SBMLToolbox/Convenience/Test/TestMatchName.m
/usr/share/SBMLToolbox/Convenience/Test/TestPairBrackets.m
/usr/share/SBMLToolbox/Convenience/Test/TestRearrange.m
/usr/share/SBMLToolbox/Convenience/Test/TestRemoveDuplicates.m
/usr/share/SBMLToolbox/Convenience/Test/TestSubstitute.m
/usr/share/SBMLToolbox/Convenience/Test/TestSubstituteConstants.m
/usr/share/SBMLToolbox/Convenience/Test/TestSubstituteFunction.m
/usr/share/SBMLToolbox/Convenience/Test/TestisIntegralNumber.m
/usr/share/SBMLToolbox/Convenience/Test/TestisValidUnitKind.m
/usr/share/SBMLToolbox/Convenience/Test/test_conv.m
/usr/share/SBMLToolbox/Convenience/Test/test_fbc_conv.m
/usr/share/SBMLToolbox/Convenience/isIntegralNumber.m
/usr/share/SBMLToolbox/Convenience/isValidUnitKind.m
/usr/share/SBMLToolbox/Convenience/matchFunctionName.m
/usr/share/SBMLToolbox/Convenience/matchName.m
/usr/share/SBMLToolbox/Convenience/piecewise.m
/usr/share/SBMLToolbox/Convenience/testmember.m