72943-99-8 (3aS,4S,5S,6E,10Z,11aR)-10-Acetoxymethyl-4-[[[(2R,3R)-2,3-dimethyloxiranyl]carbonyl]oxy]-2,3,3a,4,5,8,9,11a-octahydro-5-hydroxy-3-methylene-2-oxocyclodeca[b]furan-6-carboxylic acid methyl ester 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 68628-57-9 (3aR,4R,6E,9S,10Z,11aR)-9-Acetoxy-3a,4,5,8,9,11a-hexahydro-4-hydroxy-6,10-dimethyl-3-methylenecyclodeca[b]furan-2(3H)-one