[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][N+1][Branch1][C][C][Branch1][C][C][C@@H1][Branch2][Ring1][=Branch2][C][C][=C][N][=C][Branch1][Ring2][N][Ring1][Branch1][S][=Branch1][C][=O][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is an L-alpha-amino acid zwitterion formed from hercynylcysteine sulfoxide by transfer of a proton from the carboxy to the amino group; major species at pH 7.3. It is a tautomer of a hercynylcysteine sulfoxide."}]