IUPAC:(15R,16S,20S)-19-(methoxycarbonyl)-16-methyl-17-oxa-3,13lambda5-diazapentacyclo[11.8.0.0^{2,10}.0^{4,9}.0^{15,20}]henicosa-1(13),2(10),4(9),5,7,11,18-heptaen-13-ylium
IUPAC:(15R,16S,20S)-19-(methoxycarbonyl)-16-methyl-17-oxa-3,13lambda5-diazapentacyclo[11.8.0.0^{2,10}.0^{4,9}.0^{15,20}]henicosa-1(13),2(10),4(9),5,7,11,18-heptaen-13-ylium