You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (2S)-N-butyl-2-[[2-(4-tert-butyl-N-methylsulfonylanilino)acetyl]-[(4-methylphenyl)methyl]amino]butanamide into molecular formula.
user
C29H43N3O4S
assistant