You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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N-ethyl-5-methyl-N-(2-methylprop-2-enyl)-1-[5-(trifluoromethyl)pyridin-2-yl]pyrazole-4-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
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C17H19F3N4O
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