IUPAC:(2S,4S,7R,8S,9S,12R,13R,18R)-2,9,13,17,17-pentamethyl-7-(4-methylpent-3-en-1-yl)-5-oxapentacyclo[10.8.0.0^{2,9}.0^{4,8}.0^{13,18}]icos-1(20)-ene-6,16-dione
IUPAC:(2S,4S,7R,8S,9S,12R,13R,18R)-2,9,13,17,17-pentamethyl-7-(4-methylpent-3-en-1-yl)-5-oxapentacyclo[10.8.0.0^{2,9}.0^{4,8}.0^{13,18}]icos-1(20)-ene-6,16-dione