InChI=1S/C35H28O13/c36-18-13-20(37)25-21(14-18)45-31(17-9-5-2-6-10-17)35(25)24-19(12-11-16-7-3-1-4-8-16)26(38)23(15-22(24)47-34(35)44)46-33-29(41)27(39)28(40)30(48-33)32(42)43/h1-15,27-31,33,36-41H,(H,42,43)/b12-11+