1,4-Benzenediol,2-[9-(acetyloxy)-3,4,4a,4b,5,6,7,8,8a,9,10,10a-dodecahydro-4b,8,8,10a-tetramethyl-2-phenanthrenyl]-5-methyl-,[4aS-(4aa,4bb,8aa,9b,10ab)]-