InChI=1S/C34H30O10/c35-22-14-21(15-24(16-22)42-34-30(39)28(37)29(38)32(44-34)33(40)41)27-26-20(12-11-18-7-3-1-4-8-18)13-23(36)17-25(26)43-31(27)19-9-5-2-6-10-19/h1-17,27-32,34-39H,(H,40,41)/b12-11-