InChI=1S/C35H28O14/c36-18-9-8-15(21(39)11-18)6-7-17-10-19(37)12-22-25(17)35(34(45)48-22)26-23(46-31(35)16-4-2-1-3-5-16)13-20(38)14-24(26)47-33-29(42)27(40)28(41)30(49-33)32(43)44/h1-14,27-31,33,36-42H,(H,43,44)/b7-6+