[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][=Branch1][C][=O][S]"}, {"from": "gpt", "value": "The molecule is a thioacetic acid that is acetic acid in which the oxygen atom of the hydroxy group has been replaced by a sulfur atom. It is a tautomer of an ethanethioic O-acid."}]