72947-93-4 (Z)-4-Hydroxy-2-methyl-2-butenoic acid [(1aR,3S,4Z,5aR,8aR,9R,10aR)-3-acetoxy-1a,2,3,5a,7,8,8a,9,10,10a-decahydro-4,10a-dimethyl-8-methylene-7-oxooxireno[5,6]cyclodeca[1,2-b]furan-9-yl] ester 72948-00-6 2-Butenoic acid,4-hydroxy-2-(hydroxymethyl)- ,(3aR,4R,7R,10E,11aR)-2,3,3a,4,5,6,7,8,9,11adecahydro- 7-hydroxy-10-methyl-3,6-bis- (methylene)-2-oxocyclodeca[b]furan-4-yl ester,(2E)- 72948-01-7 2-Methylbutanoic acid [(3aR,4R,9S,11aR)-6-formyl-2,3,3a,4,5,8,9,11a-octahydro-9-hydroxy-10-methyl-3-methylene-2-oxocyclodeca[b]furan-4-yl] ester