You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[2-[N-(benzenesulfonyl)-4-bromoanilino]acetyl]-[(4-chlorophenyl)methyl]amino]-N-cyclopentylbutanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C30H33BrClN3O4S
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