You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-2-[benzyl-[2-(4-methyl-N-(4-methylphenyl)sulfonylanilino)acetyl]amino]-N-ethylbutanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C29H35N3O4S
assistant