You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5Z)-5-[[5-ethyl-2-(4-nitrophenyl)-3-oxo-1H-pyrazol-4-yl]methylidene]-3-[[3-(trifluoromethyl)phenyl]methyl]imidazolidine-2,4-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H18F3N5O5
assistant