[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a monocarboxylic acid that is the trifluoro derivative of acetic acid. It has a role as a reagent and a human xenobiotic metabolite. It is functionally related to an acetic acid. It is a conjugate acid of a trifluoroacetate."}, {"from": "gpt", "value": "[C][=Branch1][C][=O][Branch1][=Branch2][C][Branch1][C][F][Branch1][C][F][F][O]"}]