[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][C][=Branch1][C][=O][O][C][Branch1][=Branch1][C][Branch1][C][C][C][O][P][=Branch1][C][=O][Branch1][=N][C][C][C][C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][C][=Branch1][C][=O][N][C][C@@H1][Branch1][#Branch2][C][C@H1][Ring1][Branch1][C][=Branch1][C][=O][O-1][C][C][C][C][C][C][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is the anion formed by deprotonating fosinopril at the carboxyl proton. It is a conjugate base of a fosinopril."}]