You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[1-(tert-butylamino)-1-oxo-3-phenylpropan-2-yl]-4-(4-chloro-N-methylsulfonylanilino)-N-[(2,6-dichlorophenyl)methyl]butanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C31H36Cl3N3O4S
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