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What is the molecular formula of the compound with this IUPAC name 4-carbazol-9-yl-6-fluoro-11,14-diazatetracyclo[7.6.1.05,16.010,15]hexadeca-1(16),2,4,6,8,10,12,14-octaene-12,13-dicarbonitrile ?
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C28H12FN5
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