Showing structure for (3r,5s)-3-[(1s,2s,3as,5as,9ar,9br,11as)-2-hydroxy-3a,6,6,9a,11a-pentamethyl-7-oxo-1h,2h,3h,5h,5ah,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthren-1-yl]-5-(2-methylprop-1-en-1-yl)oxolan-2-one