You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 4-methyl-6-[3-methyl-4-(2,2,2-trifluoroethyl)piperazin-1-yl]-2-(3-nitrophenyl)pyrimidine .
user
C18H20F3N5O2
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