InChI=1S/C35H28O14/c36-17-9-7-16(8-10-17)31-35(25-20(38)12-18(37)13-21(25)46-31)24-19(11-6-15-4-2-1-3-5-15)26(39)23(14-22(24)48-34(35)45)47-33-29(42)27(40)28(41)30(49-33)32(43)44/h1-14,27-31,33,36-42H,(H,43,44)/b11-6+