2-Butenoic acid, 2-methyl-, 2,3,3a,4,5,6,7,8,9,11a-decahydro-6,7,9-trihydroxy-6,10-dimethyl-3-methylene-2-oxocyclodeca[b]furan-4-yl ester, [3aR-[3aR*,4R*(Z),6R*,7S*,9S*,10Z,11aR*]]- HM-9 NSC329695