21H,23H-Porphine-2,7,12,18-tetrapropanoic acid, 3,8,13,17-tetrakis(carboxymethyl)-7,8,12,13-tetrahydro-8,13-dimethyl-, (7S-(7alpha,8beta,12alpha,13beta))- 65207-12-7 Sirohydrochlorin