[{"from": "human", "value": "Provide a description of this molecule. [C][C][Branch2][Ring2][#Branch2][C@@H1][Branch2][Ring1][P][N][C@H1][Branch1][Ring2][S][Ring1][Branch1][C@@H1][Branch1][Branch1][C][Ring1][Branch1][=O][N][C][=Branch1][C][=O][C@@H1][Branch1][=Branch2][C][=C][C][=C][C][=C][Ring1][=Branch1][N][=C][C][=Branch1][C][=O][O][C]"}, {"from": "gpt", "value": "The molecule is a penicillin antibiotic prepared by the reaction of ampicillin with formaldehyde. It is hydrolysed in aqueous solution to form ampicillin. Hydrolysis is rapid under acid conditions like the stomach."}]