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