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system
Name the molecular formula for the molecule established as 9-methyl-11,19-dioxa-4,14,15,16,26-pentazahexacyclo[24.3.1.11,4.16,10.114,17.120,24]tetratriaconta-6(33),7,9,15,17(32),20,22,24(31)-octaen-5-one using the IUPAC nomenclature.
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C28H33N5O3
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