[{"from": "human", "value": "Describe this molecule. [C][=C][Branch1][=Branch1][N][C][=NH1+1][Ring1][Branch1][C][C][Branch1][=Branch1][C][=Branch1][C][=O][O][NH3+1]"}, {"from": "gpt", "value": "The molecule is an alpha-amino-acid cation. It is a conjugate acid of a histidinium(1+)."}]