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