InChI=1S/C35H28O13/c36-19-12-18(7-6-16-4-2-1-3-5-16)25-23(14-19)47-34(44)35(25)26-22(38)13-20(37)15-24(26)46-31(35)17-8-10-21(11-9-17)45-33-29(41)27(39)28(40)30(48-33)32(42)43/h1-15,27-31,33,36-41H,(H,42,43)/b7-6+