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 methyl 5-[[5-(4-chlorophenyl)-6-methyl-2,4-dioxo-1H-thieno[2,3-d]pyrimidin-3-yl]methyl]furan-2-carboxylate into its molecular formula.
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C20H15ClN2O5S
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