[{"from": "human", "value": "Provide a description of this molecule. [C][=C][Branch1][=Branch1][N][=C][N-1][Ring1][Branch1][C][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][N]"}, {"from": "gpt", "value": "The molecule is an alpha-amino-acid anion. It is a conjugate base of a histidinate(1-)."}]