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 4-(4-chloro-3-fluorophenyl)-7-(4-fluorophenyl)-1,4,8-triazatricyclo[6.3.0.02,6]undecane-3,5-dione into its molecular formula.
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C20H16ClF2N3O2
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