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