InChI=1S/C25H20O9/c1-32-14-4-2-3-11(5-14)23-21(25(30)31)15-6-12(7-18(29)24(15)34-23)19-10-17(28)22-16(27)8-13(26)9-20(22)33-19/h2-9,19,21,23,26-27,29H,10H2,1H3,(H,30,31)