[{"from": "human", "value": "Could you provide a description of this molecule? [C][N+1][Branch1][C][C][Branch1][C][C][C@@H1][Branch2][Ring1][=Branch1][C][C][C][=N][C][=C][Branch1][Ring2][N][Ring1][Branch1][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a quaternary ammonium ion consisting of L-histidine with a 3-(trimethylammonio)-3-carboxypropyl group at the 2-position of the the imidazole ring. It is a conjugate acid of a diphthinate."}]