[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][Branch2][Ring2][#Branch1][C@@H1][Branch2][Ring1][=C][N][C@H1][Branch1][Ring2][S][Ring1][Branch1][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][N][C][=Branch1][C][=O][C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][O-1][C]"}, {"from": "gpt", "value": "The molecule is the penicilloate(2-) species that is the dianion formed from benzylpenicilloic acid by deprotonation of both carboxy groups. It is the major microspecies present at pH 7.3. It is a conjugate base of a benzylpenicilloic acid."}]