You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (2R)-2-[(2-chlorophenyl)methyl-[2-(N-methylsulfonyl-2-propan-2-ylanilino)acetyl]amino]-N-cyclopentylbutanamide into its molecular formula.
user
C28H38ClN3O4S
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