You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 2-(5,6-dimethoxypyridin-3-yl)-4-methyl-6-[6-(trifluoromethyl)pyridin-3-yl]pyrrolo[3,4-b]pyridin-5-ol into its molecular formula.
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C21H17F3N4O3
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