SMILES: C[N+]1=CC=C(C=C1)C2=C3C=CC(=C(C4=NC(=C(C5=CC=C(N5)C(=C6C=CC2=N6)C7=CC=[N+](C=C7)C)C8=CC=[N+](C=C8)C)C=C4)C9=CC=[N+](C=C9)C)N3
Description: The molecule is an organic cation that is porphyrin bearing four 1-methylpyridinium-4-yl groups at the 5-, 10-, 15- and 20-positions. It has a role as a photosensitizing agent, an angiogenesis inhibitor, an antineoplastic agent and an EC 2.7.7.49 (RNA-directed DNA polymerase) inhibitor. It derives from a hydride of a porphyrin.