You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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N-[2-[(2,4-dichlorophenyl)methyl]pyrazol-3-yl]-1-(4-fluorobenzoyl)piperidine-4-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
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C23H21Cl2FN4O2
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