InChI=1S/C35H28O14/c36-18-8-5-15(6-9-18)4-7-16-10-20(38)12-22-25(16)35(34(45)48-22)26-23(46-31(35)17-2-1-3-19(37)11-17)13-21(39)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)/b7-4+