InChI=1S/C36H30O16/c1-48-30-20(40)8-14(9-21(30)41)2-3-16-10-18(38)11-22-25(16)36(35(47)51-22)26-23(49-32(36)15-4-6-17(37)7-5-15)12-19(39)13-24(26)50-34-29(44)27(42)28(43)31(52-34)33(45)46/h2-13,27-29,31-32,34,37-44H,1H3,(H,45,46)/b3-2+