The molecule is a precorrin carboxylic acid anion obtained by deprotonation of the carboxy groups of cobalt-precorrin-6A; major species at pH 7.3. It is a conjugate base of a cobalt-precorrin-6A.
cobalt;3-[(1R,2S,3S,4Z,7S,11S,17R)-8,13,17-tris(2-carboxylatoethyl)-2,7,12,18-tetrakis(carboxylatomethyl)-1,2,7,11,17-pentamethyl-10,15-dihydro-3H-corrin-21-id-3-yl]propanoate