You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[4-ethyl-5-(methoxymethyl)-4H-imidazol-2-yl]-2-[2-(trifluoromethyl)phenyl]quinazolin-4-amine into its molecular formula.
user
C22H20F3N5O
assistant