2-Butenoic acid, 2-methyl-, 2, 3,3a,4,5,6,7,8,9,11a-decahydro-7, 9-dihydroxy-10-(hydroxymethyl)-6-methyl-3-methylene-2-oxo-6, {9-epoxycyclodeca[b]furan-4-yl} ester, {[3aR-[3aR*,4R*(Z),6R*,7S*,} 9R*,10Z,11aR*\]\]- 2-Butenoic acid-, 2-methyl-, 2,3,3a,4,5,6,7,8,9, 11a-decahydro-7, 9-dihydroxy-10-(hydroxymethyl)-6-methyl-3-methylene-2-oxo-6, {9-epoxycyclodeca[b]furan-4-ylester} 75680-26-1 AIDS-129132 AIDS129132 NIVEUSIN A NSC331121