[{"from": "human", "value": "What can you tell me about this molecule? [C][C][C][=N][C][Ring1][Branch1][=C][C][=C][C][=C][Branch1][Ring2][N][Ring1][Branch1][C][=C][C][=C][C][=Branch1][Ring2][=N][Ring1][Branch1][C][=C][C][=C][C][=Branch1][Branch1][=C][Ring2][Ring1][Branch1][N][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is a tetrapyrrole fundamental parent that is obtained by formal hydrogenation across the 2,3-double bond of porphyrin. It is a tetrapyrrole fundamental parent and a member of chlorins."}]