You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named N-[4-methylsulfanyl-1-oxo-1-[[2-oxo-2-(2,4,6-trimethylanilino)ethyl]amino]butan-2-yl]furan-2-carboxamide is given. What is its corresponding molecular formula?
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C21H27N3O4S
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