You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named [2-chloro-3-(trifluoromethyl)phenyl]-[4-methyl-1-(2-methyl-1H-pyrazin-2-yl)-6,7-dihydro-4H-triazolo[4,5-c]pyridin-5-yl]methanone by IUPAC nomenclature, provide its molecular formula.
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C19H18ClF3N6O
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