[{"from": "human", "value": "Describe this molecule. [C][C][=Branch1][C][=O][N][C@@H1][Branch1][=Branch2][C][C][=C][N][=C][N][Ring1][Branch1][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a histidine derivative that is L-histidine having an acetyl substituent on the alpha-nitrogen. It has a role as an animal metabolite. It is a L-histidine derivative, a N-acetylhistidine and a N-acetyl-L-amino acid. It is a conjugate acid of a N-acetyl-L-histidinate."}]