InChI=1S/C34H30O12/c35-20-7-2-16(3-8-20)1-4-18-13-24(44-34-30(41)28(39)29(40)32(46-34)33(42)43)15-25-26(18)27(19-11-22(37)14-23(38)12-19)31(45-25)17-5-9-21(36)10-6-17/h1-15,27-32,34-41H,(H,42,43)/b4-1-