You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(2-methoxyphenyl)-4-[1-[4-[2-methoxy-4-[(E)-prop-1-enyl]phenoxy]butyl]benzimidazol-2-yl]pyrrolidin-2-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C32H35N3O4
assistant