You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 3-[5-(1H-imidazol-2-ylmethyl)-1,4,6,7-tetrahydroimidazo[4,5-c]pyridin-4-yl]-1-methylquinolin-2-one into its molecular formula.
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C20H20N6O
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