[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][Branch1][Branch2][C][S][C][=Branch1][C][=O][C][C][=Branch1][C][=O][O][C]"}, {"from": "gpt", "value": "The molecule is a methyl ester derived from beta-(acetylthio)isobutyric acid. It is a methyl ester and a thioacetate ester. It is functionally related to an isobutyric acid."}]