1260-58-8 24-Nor-16,17-secocholane-16,23-dioic acid, 11-(acetyloxy)-2,7,21-trihydroxy-4,8-dimethyl-1,17-dioxo-, gamma-lactone delta-lactone, (2alpha,4alpha,5alpha,7alpha,11alpha,13alpha,14beta,20R)- Simarolide