InChI=1S/C25H26O7/c1-15(2)5-7-18-13-16(6-12-20(18)26)14-25(24(29)31-4)21(22(27)23(28)32-25)17-8-10-19(30-3)11-9-17/h5-6,8-13,26-27H,7,14H2,1-4H3/t25-/m1/s1