You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(2-oxopropyl)-2-(4,4,4-trifluorobutyl)-6-[4-(trifluoromethyl)phenyl]pyrimidin-4-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H16F6N2O2
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