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