You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 2-(3-fluoro-4-nitrophenoxy)-1-[4-[5-(trifluoromethyl)pyridin-2-yl]piperazin-1-yl]ethanone using the IUPAC nomenclature.
user
C18H16F4N4O4
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