InChI=1S/C34H30O11/c35-21-10-8-18(9-11-21)31-27(19-2-1-3-22(36)14-19)26-20(15-23(37)16-25(26)44-31)7-4-17-5-12-24(13-6-17)43-34-30(40)28(38)29(39)32(45-34)33(41)42/h1-16,27-32,34-40H,(H,41,42)/b7-4+