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