2,7,12,17-Tetraethyl-N,N,3,8,13,18-hexamethyl-21H,23H-porphine-5-methanamine 21H,23H-Porphine-5-methanamine, 2,7,12,17-tetraethyl-N,N,3,8,13,18-hexamethyl- 58443-39-3