[{"from": "human", "value": "Please give me some details about this molecule. [C][Branch1][#Branch1][C][C][=Branch1][C][=O][O-1][C][S]"}, {"from": "gpt", "value": "The molecule is a monocarboxylic acid anion resulting from the deprotonation of the carboxy group of 4-sulfanylbutanoic acid. The major species at pH7.3. It is a conjugate base of a 4-sulfanylbutanoic acid."}]