[{"from": "human", "value": "Provide a description of this molecule. [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 peptide zwitterion obtained by transfer of a proton from the carboxy to the amino terminus of Ala-Gly. It is a tautomer of an Ala-Gly."}]