You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[[1-[4-methyl-6-(trifluoromethyl)pyrimidin-2-yl]piperidin-4-yl]methyl]methanesulfonamide into molecular formula.
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C13H19F3N4O2S
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