Showing structure for (1r,3as,3br,5ar,7r,9ar,9bs,11ar)-1-[(2r,4e)-5,6-dimethylhept-4-en-2-yl]-3a,6,6,9a,11a-pentamethyl-dodecahydro-1h-cyclopenta[a]phenanthren-7-yl acetate