[{"from": "human", "value": "Could you provide a description of this molecule? [C][NH2+1][C@@H1][Branch1][=N][C][C][=C][Branch1][#Branch1][N][=C][N][Ring1][Branch1][C][S][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is an L-alpha-amino acid zwitterion formed from ovothiol B by transfer of a proton from the carboxy to the amino group; major species at pH 7.3. It is functionally related to a L-histidine zwitterion. It is a tautomer of an ovothiol B."}]