You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
8-[2-(dimethylamino)pyrimidin-5-yl]-3-methyl-1-(2-methylpyridin-3-yl)imidazo[4,5-c]quinolin-2-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H21N7O
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