Showing structure for 4-hydroxy-9a,11a-dimethyl-1-(1-{1,5,6,6-tetramethyl-2,7,8-trioxabicyclo[3.2.1]octan-3-yl}ethyl)-1h,2h,3h,3ah,3bh,4h,5h,9bh,10h,11h-cyclopenta[a]phenanthren-7-one