The molecule is a precorrin containing seven C-methyl groups introduced into the tetrapyrrole framework. It is a conjugate acid of a precorrin-7(6-).
3-[(1R,2S,3S,4Z,7S,11S,17R,18R,19R)-8,13,17-tris(2-carboxyethyl)-2,7,18-tris(carboxymethyl)-1,2,7,11,12,15,17-heptamethyl-3,10,15,18,19,21-hexahydrocorrin-3-yl]propanoic acid