[{"from": "human", "value": "What can you tell me about this molecule? [C][C][C][=C][/C][=C][/C][=Branch2][#Branch1][Ring1][=C][C][=Branch2][=Branch1][#Branch2][=C][Branch2][Branch1][Branch2][C][=N][/C][=Branch2][Ring2][Ring1][=C][\\C][=N][C][Branch2][Ring1][Ring1][C][Branch1][Ring2][O][Ring1][Ring1][C][=Branch1][=Branch1][=C][Ring2][Ring1][Ring1][C][N][Ring2][Ring1][Ring2][C][=Branch1][Branch1][=C][Ring1][O][C][C][=C][/C@H1][Branch1][N][C@@H1][Ring2][Ring1][Ring2][C][C][C][=Branch1][C][=O][O-1][C][C][=Branch1][=Branch1][=C][Ring2][Ring1][#C][O][C][=Branch1][C][=O][O][C][N][\\-Ring2][Ring2][#Branch1][C]"}, {"from": "gpt", "value": "The molecule is a cyclic tetrapyrrole anion that is the conjuagte base of epoxypheophorbide a. Major microspecies at pH 7.3 (according to Marvin v. 6.2.0). It is a conjugate base of an epoxypheophorbide a. It is a conjugate acid of an epoxypheophorbide a(2-)."}]