((3R,5R,8R,9R,10S,14R)-17-{1-[(Z)-Hydroxyimino]-ethyl}-5,14-dimethyl-2,3,4,5,6,7,8,9,10,11,12,14,15,16-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl)-carbamic acid ethyl ester 生成
((3R,5R,8R,9R,10S,13S,14R)-5,14-Dimethyl-17-oxo-hexadecahydro-cyclopenta[a]phenanthren-3-yl)-carbamic acid ethyl ester