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 (2R,5Z)-N-benzyl-5-ethylidene-4-(2-methylprop-1-enyl)-2-(trifluoromethyl)pyran-2-carboxamide is given. What is its corresponding molecular formula?
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C20H22F3NO2
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