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