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 NIVEUSIN A NSC331121