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 4-[5-[2-(2-hydroxyethylsulfonyl)ethoxymethyl]-3-phenyl-1,2-oxazol-4-yl]benzenesulfonamide is given. What is its corresponding molecular formula?
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C20H22N2O7S2
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