(3S,4aR,6bS,8aR,11R,12S,12aR,12bS,14bS)-4,4,6b,8a,11,12,12b,14b-octamethyl-1,2,3,4,4a,5,6,6b,7,8,8a,9,10,11,12,12a,12b,13,14,14b-icosahydropicen-3-yl acetate