[{"from": "human", "value": "What can you tell me about this molecule? [C][C][=C][Branch2][=Branch1][Branch2][C][=C][C][=N][C][=Branch2][Ring2][P][=C][C][=N][C][=Branch2][Ring1][N][=C][C][=C][Branch2][Ring1][Branch1][C][=Branch1][S][=C][Branch1][Ring2][N][Ring1][Branch1][C][=C][Ring2][Ring1][Ring1][N][Ring2][Ring1][C][C][=C][C][C][=Branch1][O][=C][Ring1][P][C][C][C][=Branch1][C][=O][O][C][C][=Branch1][=Branch1][=C][Ring2][Ring1][=N][C][C][C][C][=Branch1][C][=O][O][C][=C]"}, {"from": "gpt", "value": "The molecule is a tetrapyrrole containing 4 methyl, 2 propionic and 2 vinyl side chains that is a metabolic precursor for hemes, cytochrome c and chlorophyll. Protoporphyrin IX is produced by oxidation of the methylene bridge of protoporphyrinogen by the enzyme protoporphyrinogen oxidase."}]