You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[4-(4-acetylpiperazine-1-carbonyl)phenyl]methyl]-6-bromo-4-phenyl-3-propanoylisoquinolin-1-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C32H30BrN3O4
assistant