Showing structure for (1s,3s,3ar,3br,7ar,8ar)-3-{[(3r,3ar,3br,7as,8r,8ar)-3b,4,4,7a-tetramethyl-8-[(3-methylbut-2-enoyl)oxy]-octahydroindeno[1,2-c]furan-3-yl]oxy}-3b,4,4,7a-tetramethyl-octahydroindeno[1,2-c]furan-1-yl (2e)-2-methylbut-2-enoate