InChI=1S/C30H20O9/c1-11-7-15-21(13-3-2-4-17(31)23(13)28(36)24(15)19(33)8-11)22-14-5-6-18(32)27(35)26(14)29(37)25-16(22)9-12(30(38)39)10-20(25)34/h2-10,21-22,31-35H,1H3,(H,38,39)