Showing structure for (1r,3as,3bs,5as,7s,9as,11as)-9a,11a-dimethyl-1-[(2z)-6-methyl-4-oxohept-2-en-2-yl]-5-oxo-1h,2h,3h,3ah,3bh,4h,5ah,6h,7h,8h,9h,11h-cyclopenta[a]phenanthren-7-yl acetate