[{"from": "human", "value": "Describe this molecule. [C][C][Branch1][C][C][C@@H1][Branch1][N][C][=Branch1][C][=O][N][C][C][=Branch1][C][=O][O-1][NH3+1]"}, {"from": "gpt", "value": "The molecule is a dipeptide zwitterion obtained by transfer of a proton from the carboxy to the amino terminus of Val-Gly. It has a role as a metabolite. It is a tautomer of a Val-Gly."}]