You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by 1-[2-[4-[4-(5-benzylpyrimidin-2-yl)piperazin-1-yl]-7-methoxyquinazolin-6-yl]oxyethyl]pyrrolidin-2-one ?
user
C30H33N7O3
assistant