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 3-methyl-N-[[3-(2-methylphenyl)-1,2,4-oxadiazol-5-yl]methyl]-2-oxo-1,3-benzothiazole-6-sulfonamide is given. What is its corresponding molecular formula?
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C18H16N4O4S2
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