[{"from": "human", "value": "Please give me some details about this molecule. [C][Branch1][#Branch2][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1][S]"}, {"from": "gpt", "value": "The molecule is an amino acid zwitterion. It is a conjugate base of a cysteinium. It is a conjugate acid of a cysteinate(1-). It is a tautomer of a cysteine."}]