You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 7-(2,4-dichlorophenyl)-10-methyl-2-pentan-2-yl-2,9-diazatricyclo[6.3.1.04,12]dodeca-1(11),4(12),5,7,9-pentaen-3-one by IUPAC nomenclature, provide its molecular formula.
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C22H20Cl2N2O
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