[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][=Branch1][C][=O][O][C][C][=C][Branch2][Ring1][P][N][C@@H1][Branch2][Ring1][#Branch1][C@@H1][Branch1][Branch1][C][Ring1][Ring2][=O][N][C][=Branch1][C][=O][C][S][C][=C][C][=N][C][=C][Ring1][=Branch1][S][C][Ring2][Ring1][Ring2][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is the anion of cephapirin obtained by removal of a proton form the carboxylic acid group. It is a conjugate base of a cephapirin."}]