Heptacarboxylporphyrin I:MRat:XXX:Stool:Qn
heptacarboxylporphyrin i:mrat:xxx:stool:qn
Heptacarboxylporphyrin I:Mass Rate:Not specified:Stool:Quantitative
heptacarboxylporphyrin i:mass rate:not specified:stool:quantitative