(3aS,5R,6S,8R,9bS)-6,8-dihydroxy-6,9-dimethyl-3-methylene-2-oxo-2,3,3a,4,5,6,6a,7,8,9b-decahydroazuleno[4,5-b]furan-5-yl acetate InChI=1/C17H22O6/c1-7-10-5-13(22-9(3)18)17(4,21)11-6-12(19)8(2)14(11)15(10)23-16(7)20/h10-13,15,19,21H,1,5-6H2,2-4H3/t10-,11?,12+,13+,15-,17-/m0/s azuleno[4,5-b]furan-2(3H)-one, 5-(acetyloxy)-3a,4,5,6,6a,7,8,9b-octahydro-6,8-dihydroxy-6,9-dimethyl-3-methylene-, (3aS,5R,6S,8R,9bS)-