IUPAC:(1R,2S,4S,7S,8S,11R,12R,17R)-7-(furan-3-yl)-1,8,12,16,16-pentamethyl-3,6-dioxapentacyclo[9.8.0.0^{2,4}.0^{2,8}.0^{12,17}]nonadeca-13,18-diene-5,15-dione
IUPAC:(1R,2S,4S,7S,8S,11R,12R,17R)-7-(furan-3-yl)-1,8,12,16,16-pentamethyl-3,6-dioxapentacyclo[9.8.0.0^{2,4}.0^{2,8}.0^{12,17}]nonadeca-13,18-diene-5,15-dione