(4aS,4bS,6aR,7R,9aS,9bS)-7-acetyl-4a,6a-dimethyl-2-oxo-2,3,4,4a,4b,6,6a,7,8,9,9a,9b,10,11-tetradecahydrobenzo[h]cyclopenta[c]chromen-7-yl acetate