3517-38-2
[(8R,9S,10R,13S,14S,17R)-17-acetyl-17-acetyloxy-10,13-dimethyl-1,2,3,4,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-yl] acetate
→
13258-29-2
(17-acetyl-17-acetyloxy-10,13-dimethyl-7-oxo-2,3,4,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-3-yl) acetate