You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[4-[(4,5-dimethoxy-2-methyl-3,6-dioxocyclohexa-1,4-dien-1-yl)methyl]phenyl]-N-[4-(trifluoromethyl)phenyl]propanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H24F3NO5
assistant