4alpha,10alpha-Dihydroxy-1beta(H),5beta(H)-guai-11(13)-en-8alpha,12-olide 5,8-Dihydroxy-5,8-dimethyl-3-methylene-decahydro-azuleno[6,5-b]furan-2-one InChI=1/C15H22O4/c1-8-9-6-11-10(4-5-14(11,2)17)15(3,18)7-12(9)19-13(8)16/h9-12,17-18H,1,4-7H2,2-3H3/t9-,10?,11?,12+,14-,15-/m1/s azuleno[6,5-b]furan-2(3H)-one, decahydro-5,8-dihydroxy-5,8-dimethyl-3-methylene-, (3aR,5R,8R,9aS)- rel-(3aR,5R,8R,9aS)-5,8-dihydroxy-5,8-dimethyl-3-methylenedecahydroazuleno[6,5-b]furan-2(3H)-one