You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-2-[[2-(3-acetyl-N-methylsulfonylanilino)acetyl]-[(2-methylphenyl)methyl]amino]-N-cyclopentylbutanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H37N3O5S
assistant