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-[[2-[[5-(1,3-benzodioxol-5-yl)-1,3,4-oxadiazol-2-yl]sulfanyl]acetyl]-methylamino]-N-(4-methylphenyl)acetamide is given. What is its corresponding molecular formula?
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C21H20N4O5S
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