[{"from": "human", "value": "Please give me some details about 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][N]"}, {"from": "gpt", "value": "The molecule is a quaternary ammonium ion that is the derivative of L-histidine having a 4-amino-4-oxo-3-(trimethylammonio)butyl group at the 2-position of the imidazole ring. It is a tautomer of a diphthamide zwitterion."}]