65206-35-1

23H,25H-Difuro[2,3-b:2',3'-g]porphine-6a,14,- 18,22a(2H,8H)-tetrapropanoic acid,13,19-bis(carboxymethyl)-3,3a,9,9a-tetrahydro- 3a,9a-dimethyl-2,8-dioxo-,(3aR,6aR,- 9aR,22aR)-