72947-96-7 (Z)-4-Hydroxy-2-methyl-2-butenoic acid [(3aR)-7α-acetoxy-2,3,3aβ,4,5,6,6aβ,7,9aβ,9bβ-decahydro-9-methyl-3,6-bis(methylene)-2-oxoazuleno[4,5-b]furan-4α-yl] ester 72948-21-1 (3R,5S,5R,8aβ)-4α-Acetyloxy-5-(3-furanyl)-2,3,4,4,4a,5,6,7,8,8aβ-decahydro-4aα-(hydroxymethyl)-2α-methyldispiro[furan-3(2H),1(5H)-naphthalene-5,2-oxiran]-2-one