Synonyms: 2-Butenoicacid, 2-methyl-,dodecahydro-6-hydroxy-1a,5-dimethyl-9-methylene-8-oxooxireno[4,5]cyclodeca[1,2-b]furan-10-ylester, [1aR-[1aR*,5R*,6R*,6aS*,9aS*,10R*(Z),10aR*]]-;Oxireno[4,5]cyclodeca[1,2-b]furan, 2-butenoic acid deriv.; (-)-Blumealactone A;Blumealactone A