You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[3-fluoro-2-(4-fluorophenyl)phenyl]-N-[1-methyl-3-(trifluoromethyl)pyrazol-4-yl]formamide into its molecular formula.
user
C18H12F5N3O
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