[{"from": "human", "value": "Could you provide a description of this molecule? [C][S][C][C][C@@H1][Branch2][Ring2][Ring1][C][=Branch1][C][=O][N][C@@H1][Branch1][#Branch2][C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][N][C@@H1][Branch1][Branch1][C][C][S][C][C][=Branch1][C][=O][O-1][NH3+1]"}, {"from": "gpt", "value": "The molecule is a tripeptide zwitterion resulting from the transfer of a proton from the carboxy group to the amino group of Met-Phe-Met. Major microspecies at pH 7.3. It is a tautomer of a Met-Phe-Met."}]