You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 4-[(2,5-difluorophenyl)methylidene]-N-[1-(2,2,2-trifluoroacetyl)piperidin-4-yl]piperidine-1-carboxamide into its molecular formula.
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C20H22F5N3O2
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