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system
Name the molecular formula for the molecule established as 15-(2,2-dimethylpropyl)-6,8,12,12-tetramethyl-9,20-diazapentacyclo[11.7.1.02,11.05,10.017,21]henicosa-1(20),2(11),3,5(10),6,8,13(21),14,16,18-decaene using the IUPAC nomenclature.
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C28H30N2
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