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-methylsulfonyl-N-[4-(5,6,7,8-tetrahydronaphthalen-2-yl)-1,3-thiazol-2-yl]benzamide is given. What is its corresponding molecular formula?
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C21H20N2O3S2
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