2-Propenoic acid, 3-((3S,3aS,4R,5aR,6R,6aR,9aS,9bR,9cR,10aR)-4-(acetyloxy)-3-(3-furanyl)dodecahydro-6a,9a-dihydroxy-3a,6,8,8,9b-pentamethyl-1,7-dioxo-3H-furo(3',2':4,5)cyclopent(1,2-f)oxireno(d)-2-benzopyran-6-yl)-, methyl ester, (2Z)- 81279-34-7