You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (2R)-2-[[2-[N-(benzenesulfonyl)-3-methoxyanilino]acetyl]-[(2-methylphenyl)methyl]amino]-N-ethylpropanamide into molecular formula.
user
C28H33N3O5S
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