You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(2R)-1-[[(2S)-butan-2-yl]amino]-1-oxo-3-phenylpropan-2-yl]-4-(3-methyl-N-methylsulfonylanilino)-N-[(2-methylphenyl)methyl]butanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C33H43N3O4S
assistant