You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[(1S,2S)-2-[4-(3,4-dimethylphenyl)butylamino]-1,2-diphenylethyl]-4-methylbenzenesulfonamide into its molecular formula.
user
C33H38N2O2S
assistant