You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(E)-N-[(3,4-dimethoxyphenyl)methyl]-3-[4-(2-oxopyrrolidin-1-yl)phenyl]prop-2-enamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H24N2O4
assistant