You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (2R)-2-[4-(4-ethoxy-N-methylsulfonylanilino)butanoyl-[(4-methoxyphenyl)methyl]amino]-N-propan-2-ylbutanamide into its molecular formula.
user
C28H41N3O6S
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