Showing structure for (1s,3ar,4s,5ar,9as,11ar)-4-hydroxy-3a,6,6,9a,11a-pentamethyl-1-[(2r)-2-methyl-5-oxooxolan-2-yl]-1h,2h,4h,5h,5ah,8h,9h,11h-cyclopenta[a]phenanthrene-3,7,10-trione