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 2-[1-(2,3-dihydro-1,4-benzodioxin-6-yl)-2,5-dioxopyrrolidin-3-yl]sulfanyl-N-(2-methoxyphenyl)acetamide is given. What is its corresponding molecular formula?
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C21H20N2O6S
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