[{"from": "human", "value": "Please give me some details about this molecule. [C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][C@@H1][Branch2][Ring1][=Branch1][C][=Branch1][C][=O][N][C@@H1][Branch1][=Branch2][C][C][=C][N][=C][N][Ring1][Branch1][C][=Branch1][C][=O][O][N]"}, {"from": "gpt", "value": "The molecule is a dipeptide composed of L-phenylalanine and L-histidine joined by a peptide linkage. It has a role as a metabolite. It is functionally related to a L-phenylalanine and a L-histidine. It is a tautomer of a Phe-His zwitterion."}]