You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[1-[4-(4-chlorobenzoyl)piperazin-1-yl]-3-methyl-1-oxobutan-2-yl]-2-methylbenzamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H28ClN3O3
assistant