InChI=1S/C25H26O8/c1-14(2)5-6-17-11-15(12-19(31-3)21(17)27)13-25(24(30)32-4)20(22(28)23(29)33-25)16-7-9-18(26)10-8-16/h5,7-12,26-28H,6,13H2,1-4H3/t25-/m1/s1