You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-N-butyl-2-[[2-(3,5-dichloro-N-(4-methylphenyl)sulfonylanilino)acetyl]-[(2,6-dichlorophenyl)methyl]amino]propanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C29H31Cl4N3O4S
assistant