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 5-[6-(3,5-dichlorophenyl)-3-ethylsulfonylpyridin-2-yl]-2-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine is given. What is its corresponding molecular formula?
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C20H13Cl2F3N4O2S
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