[{"from": "human", "value": "Describe this molecule. [C][=C][Branch1][=Branch1][N][C][=N][Ring1][Branch1][C][C][Branch1][=Branch1][C][=Branch1][C][=O][O][N]"}, {"from": "gpt", "value": "The molecule is an alpha-amino acid that is propanoic acid bearing an amino substituent at position 2 and a 1H-imidazol-4-yl group at position 3. It has a role as a metabolite. It is an alpha-amino acid, a member of imidazoles, an aromatic amino acid and a polar amino acid. It contains a 1H-imidazol-4-ylmethyl group. It is a conjugate base of a histidinium(1+). It is a conjugate acid of a histidinate(1-)."}]