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Under IUPAC nomenclature, a molecule named 2-[(10E)-10-chloro-5-methyl-1,2,3,3a,4,5,6,7,8,9-decahydrocyclopenta[9]annulen-4-yl]-N-[[5-(2-hydroxypropan-2-yl)-1,3-thiazol-2-yl]sulfonyl]acetamide is given. What is its corresponding molecular formula?
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C21H31ClN2O4S2
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