2-Butenoic acid, 2-methyl-, 2,3,3a,4,5,8,9,11a-octahydro-8-hydroxy-6-(hydroxymethyl)-10-methyl-3-methylene-2-oxocyclodeca[b]furan-4-yl ester, [3aR-[3aR*,4R*(Z),6Z,8S*,10E,11aR*]]- B633439K049 ERIOFERTIN NSC283440