You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6,7-dimethoxy-N-(1-pent-4-enylpiperidin-3-yl)-2-pyrrolidin-1-ylquinazolin-4-amine is the IUPAC name of a molecule. Please give its molecular formula.
user
C24H35N5O2
assistant