The molecule is a precorrin. It derives from a hydrogenobyrinic acid. It is a conjugate acid of a hydrogenobyrinic acid a,c-diamide(4-) and a hydrogenobyrinic acid a,c-diamide(2-).
3-[(1R,2S,3S,5Z,7S,8S,9Z,13S,14Z,17R,18R,19R)-2,7-bis(2-amino-2-oxoethyl)-3,13,17-tris(2-carboxyethyl)-18-(carboxymethyl)-1,2,5,7,12,12,15,17-octamethyl-3,8,13,18,19,22-hexahydrocorrin-8-yl]propanoic acid