You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (2S)-2-[[2-[N-(benzenesulfonyl)-2,5-dimethylanilino]acetyl]-[(3-chlorophenyl)methyl]amino]-N-ethylpropanamide into its molecular formula.
user
C28H32ClN3O4S
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