[{"from": "human", "value": "What can you tell me about this molecule? [C][=C][C][=C][Branch1][Branch1][C][=C][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 peptide zwitterion obtained by transfer of a proton from the carboxy to the amino terminus of Gly-Phe. It has a role as a human metabolite. It is an enantiomer of a Gly-Phe."}]