You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name ethyl (6S)-4-[(2-chlorophenoxy)methyl]-6-(2,3-dichlorophenyl)-3-methyl-2-oxo-1,6-dihydropyrimidine-5-carboxylate into its molecular formula.
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C21H19Cl3N2O4
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