IUPAC:(1R,2R,4S,7S,8S,11R,12R,13S,18R)-7-(furan-3-yl)-1,8,12,17,17-pentamethyl-5,15,20-trioxo-3,6,16-trioxapentacyclo[9.9.0.0^{2,4}.0^{2,8}.0^{12,18}]icosan-13-yl acetate
IUPAC:(1R,2R,4S,7S,8S,11R,12R,13S,18R)-7-(furan-3-yl)-1,8,12,17,17-pentamethyl-5,15,20-trioxo-3,6,16-trioxapentacyclo[9.9.0.0^{2,4}.0^{2,8}.0^{12,18}]icosan-13-yl acetate