InChI=1S/C26H22O9/c1-33-17-11-14-4-2-3-13-7-10-16(19(18(13)14)20(17)27)12-5-8-15(9-6-12)34-26-23(30)21(28)22(29)24(35-26)25(31)32/h2-11,21-24,26,28-30H,1H3,(H,31,32)