[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][Branch1][C][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][C][=Branch1][C][=O][C@H1][Branch1][=Branch2][C][C][=C][N][=C][N][Ring1][Branch1][N]"}, {"from": "gpt", "value": "The molecule is a dipeptide formed from L-histidine and L-leucine residues. It has a role as a metabolite. It is a tautomer of a His-Leu zwitterion."}]