You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 3-propan-2-yl-3-azahexacyclo[13.8.0.01,5.05,14.06,11.018,23]tricosa-6,8,10,12,16,18,20,22-octaene-2,4-dione into molecular formula.
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C25H21NO2
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