InChI=1S/C30H24O14/c31-15-10-21-24(22(11-15)43-30-27(38)25(36)26(37)28(44-30)29(39)40)19(34)12-20(42-21)14-3-5-16(6-4-14)41-23(35)8-2-13-1-7-17(32)18(33)9-13/h1-12,25-28,30-33,36-38H,(H,39,40)/b8-2+