2(5H)-furanone, 4-[(3aR,4S,9bR)-1,2,3a,4,5,6,7,8,9,9b-decahydro-4-hydroxy-3a,6,6,9b-tetramethylnaphtho[2,1-b]furan-2-yl]-5-hydroxy- 5-hydroxy-4-[(3aR,4S,9bR)-4-hydroxy-3a,6,6,9b-tetramethyl-1,2,3a,4,5,6,7,8,9,9b-decahydronaphtho[2,1-b]furan-2-yl]furan-2(5H)-one 8S,12S-Epoxy-7R,16-dihydroxyhalima-5(10),13-dien-15,16-olide InChI=1/C20H28O5/c1-18(2)7-5-6-12-13(18)9-15(21)20(4)19(12,3)10-14(25-20)11-8-16(22)24-17(11)23/h8,14-15,17,21,23H,5-7,9-10H2,1-4H3/t14?,15-,17?,19+,20-/m0/s