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system
Name the molecular formula for the molecule established as (19S)-5-[3-(dimethylamino)propylamino]-19-ethyl-19-hydroxy-7-nitro-17-oxa-3,13-diazapentacyclo[11.8.0.02,11.04,9.015,20]henicosa-1(21),2,4,6,8,10,15(20)-heptaene-14,18-dione using the IUPAC nomenclature.
user
C25H27N5O6
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