You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 2-(3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl)-N-[1-(4-fluorophenyl)cyclopropyl]acetamide by IUPAC nomenclature, provide its molecular formula.
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C20H19FN2O3
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