IUPAC:(2S,10S)-3,12-dioxapentacyclo[11.8.0.0^{2,10}.0^{4,9}.0^{15,20}]henicosa-1(13),4(9),5,7,15(20),16,18-heptaene-14,21-dione
IUPAC:(2S,10S)-3,12-dioxapentacyclo[11.8.0.0^{2,10}.0^{4,9}.0^{15,20}]henicosa-1(13),4(9),5,7,15(20),16,18-heptaene-14,21-dione