InChI=1S/C35H28O14/c36-18-10-8-16(9-11-18)31-35(23-17(7-6-15-4-2-1-3-5-15)12-19(37)13-20(23)48-34(35)45)24-21(46-31)14-22(25(38)26(24)39)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+