Showing structure for (2-{3a,7,8-trihydroxy-9a,11a-dimethyl-5-oxo-1h,2h,3h,5ah,6h,7h,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthren-1-yl}-2,6-dihydroxy-6-methylheptan-3-yl)oxyphosphonic acid