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-(furan-3-yl)-3-phenyl-2,6-diazatricyclo[7.3.1.05,13]trideca-5,9(13)-dien-8-one into its molecular formula.
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C21H20N2O2
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