Showing structure for [(1s,5s,5ar,7s,9ar,9bs,11ar)-1-[(2s)-2,6-dihydroxy-6-methylheptan-2-yl]-5,5a-dihydroxy-9a,11a-dimethyl-1h,2h,5h,6h,7h,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthren-7-yl]oxyphosphonic acid