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-(4,5-dihydrobenzo[e][1,3]benzothiazol-2-yl)-4-propan-2-ylsulfonylbenzamide is given. What is its corresponding molecular formula?
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C21H20N2O3S2
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