[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][=C][Branch1][=Branch1][N][C][=N][Ring1][Branch1][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][N][C][=Branch1][C][=O][C][NH3+1]"}, {"from": "gpt", "value": "The molecule is a dipeptide zwitterion resulting from transfer of a proton from the carboxy to the amino group of glycyl-L-histidine; major species at pH 7.3. It is a tautomer of a member of Gly-His."}]