[{"from": "human", "value": "What can you tell me about this molecule? [C][Branch1][#Branch2][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][S]"}, {"from": "gpt", "value": "The molecule is an optically active form of cysteine having D-configuration. It is a cysteine and a D-alpha-amino acid. It is a conjugate base of a D-cysteinium. It is a conjugate acid of a D-cysteinate(1-). It is an enantiomer of a L-cysteine. It is a tautomer of a D-cysteine zwitterion."}]