You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name N,N-dimethyl-5-[[5-(4-methylphenyl)-4-oxothieno[2,3-d]pyrimidin-3-yl]methyl]furan-2-sulfonamide into its molecular formula.
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C20H19N3O4S2
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