You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 3-[5-[methoxy(phenyl)methyl]-1,3,4-oxadiazol-2-yl]-N-[[3-(trifluoromethyl)phenyl]methyl]propanamide .
user
C21H20F3N3O3
assistant