You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[4-(2,3-dichlorophenyl)-8-methyl-2-oxo-3,4-dihydro-1H-quinolin-7-yl]-2-methoxyacetamide into its molecular formula.
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C19H18Cl2N2O3
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