You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 1-[4-(2,6-dimethylquinoline-3-carbonyl)piperazin-1-yl]ethanone;2,2,2-trifluoroacetic acid by IUPAC nomenclature, provide its molecular formula.
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C20H22F3N3O4
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