You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N-(5-chloropyridin-2-yl)-5-(4-methoxyphenyl)-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-2-carboxamide by IUPAC nomenclature, provide its molecular formula.
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C20H13ClF3N5O2
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