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-(3,4-dichlorophenyl)-9-[1-(dimethylamino)propan-2-yloxy]-5,6-dihydrobenzo[h]cinnolin-3-one is given. What is its corresponding molecular formula?
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C23H23Cl2N3O2
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