Showing structure for (1r,3r,3as,4s,8ar)-3-hydroxy-3-isopropyl-6,8a-dimethyl-4-{[(2z)-2-methylbut-2-enoyl]oxy}-8-oxo-2,3a,4,5-tetrahydro-1h-azulen-1-yl (2z)-2-methylbut-2-enoate