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What is the molecular formula of the compound with this IUPAC name 2-[2-[5-[3-ethoxy-4-(trifluoromethyl)phenyl]-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidin-3-yl]ethynyl]-1,3-thiazole-5-sulfonic acid ?
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C21H12F6N4O4S2
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