You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named N-(3,4-difluorophenyl)-1-[2-(3,4-dimethylanilino)-2-oxoethyl]piperidine-4-carboxamide is given. What is its corresponding molecular formula?
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C22H25F2N3O2
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