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Name the molecular formula for the molecule established as ethyl 8-methyl-2-oxa-7,17-diazapentacyclo[11.8.0.01,17.03,11.06,10]henicosa-3(11),4,6(10),8-tetraene-9-carboxylate using the IUPAC nomenclature.
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C22H28N2O3
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