Hexacarboxylporphyrin III:MRat:XXX:Stool:Qn
hexacarboxylporphyrin iii:mrat:xxx:stool:qn
Hexacarboxylporphyrin III:Mass Rate:Not specified:Stool:Quantitative
hexacarboxylporphyrin iii:mass rate:not specified:stool:quantitative