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-[3,5-diethyl-1-[2-(2,2,2-trifluoroethoxy)ethyl]pyrazol-4-yl]propan-1-one by IUPAC nomenclature, provide its molecular formula.
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C14H21F3N2O2
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