Showing structure for (2r)-1-[(1s,2s,3'r,3as,3bs,4r,4'r,9ar,9br,11as)-4-(acetyloxy)-2-hydroxy-3',9a,11a-trimethyl-7-oxo-3,3a,3b,4,5,9b,10,11-octahydro-2h-spiro[cyclopenta[a]phenanthrene-1,2'-oxetan]-4'-yl]-3-hydroxy-2,3-dimethylbutan-2-yl acetate