You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name (4-chloro-3-fluorophenyl)-[4-[3,5-di(propan-2-yl)pyrazol-1-yl]piperidin-1-yl]methanone into its molecular formula.
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C21H27ClFN3O
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