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 2-(2,6-dichlorophenyl)-N-(6-piperidin-1-ylpyrimidin-4-yl)-1H-imidazo[4,5-c]pyridin-4-amine is given. What is its corresponding molecular formula?
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C21H19Cl2N7
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