(3R,5R,8S,9S,10S,13S,14S,17R)-17-[(1R)-1,2-dihydroxyethyl]-3,17-dihydr oxy-10,13-dimethyl-2,3,4,5,6,7,8,9,12,14,15,16-dodecahydro-1H-cyclopen ta[a]phenanthren-11-one