[{"from": "human", "value": "What can you tell me about this molecule? [C][N+1][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][=C][C][=C][C][=Branch2][=Branch1][O][=C][Branch2][Branch1][N][C][=N][C][=Branch2][Ring2][P][=C][Branch2][Ring2][C][C][=C][C][=C][Branch1][Ring2][N][Ring1][Branch1][C][=Branch1][O][=C][C][=C][C][Ring2][Ring1][Ring2][=N][Ring1][Branch1][C][=C][C][=N+1][Branch1][Branch1][C][=C][Ring1][=Branch1][C][C][=C][C][=N+1][Branch1][Branch1][C][=C][Ring1][=Branch1][C][C][=C][Ring2][Ring1][#C][C][=C][C][=N+1][Branch1][Branch1][C][=C][Ring1][=Branch1][C][N][Ring2][Ring2][N]"}, {"from": "gpt", "value": "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."}]