InChI=1S/C20H28O6/c1-10-14(21)20-9-19(10,26)8-5-11(20)17(2)6-4-7-18(3,16(24)25)13(17)12(20)15(22)23/h11-14,21,26H,1,4-9H2,2-3H3,(H,22,23)(H,24,25)