InChI=1S/C20H26O6/c1-10-7-19-8-20(10,25)6-3-11(19)18-5-4-12(21)17(2,16(24)26-9-18)14(18)13(19)15(22)23/h11-14,21,25H,1,3-9H2,2H3,(H,22,23)