You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-benzyl-2-methyl-1-[2-(4-methylsulfanylphenyl)ethyl]-4-methylsulfonyl-6-oxopiperazine-2-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H29N3O4S2
assistant