You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[4-fluoro-2-(hydroxymethyl)phenoxy]-N-(2-oxo-1H-pyridin-4-yl)-4-(trifluoromethyl)benzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H14F4N2O4
assistant