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system
Name the molecular formula for the molecule established as 2-[4-(diethylamino)phenyl]-6-pyridin-4-yl-12,20-dioxa-5,7,8,10-tetrazapentacyclo[11.8.0.03,11.04,8.014,19]henicosa-1(13),3(11),4,6,9,14,16,18-octaen-21-one using the IUPAC nomenclature.
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C30H24N6O3
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