[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a monocarboxylic acid that is acetic acid in which two of the methyl hydrogens are substituted by fluorines. It is a monocarboxylic acid and an organofluorine compound. It is functionally related to an acetic acid. It is a conjugate acid of a difluoroacetate."}, {"from": "gpt", "value": "[C][Branch1][=Branch1][C][=Branch1][C][=O][O][Branch1][C][F][F]"}]