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-(4-chlorophenyl)-N-[4-(2,6-dimethoxyphenyl)-5-thiophen-2-yl-1,2,4-triazol-3-yl]ethanesulfonamide is given. What is its corresponding molecular formula?
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C22H21ClN4O4S2
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