19-ETHYL-19-HYDROXY-14,18-DIOXO-17-OXA-3,13-DIAZAPENTACYCLO(11.8.0.0(2,11).0(4,9).0(15,20))HENICOSA-1(21),2,4,6,8,10,15(20)-HEPTAENE-6-CARBALDEHYDE
19-ethyl-19-hydroxy-14,18-dioxo-17-oxa-3,13-diazapentacyclo(11.8.0.0(2,11).0(4,9).0(15,20))henicosa-1(21),2,4,6,8,10,15(20)-heptaene-6-carbaldehyde