3,3',3'',3'''-(21H,23H-Porphinetetrayl)tetrakis(1-methylpyridinium) Pyridinium, 3,3',3'',3'''-(21H,23H-porphinetetrayl)tetrakis(1-methyl- Tetra(N-metil-3-piridil)porfirina [Spanish] UU6859600