InChI=1S/C37H28O16/c1-49-17-9-26-30(27(10-17)52-37-33(46)31(44)32(45)35(53-37)36(47)48)23(43)13-25(50-26)15-4-7-19(39)18(8-15)28-20(40)11-21(41)29-22(42)12-24(51-34(28)29)14-2-5-16(38)6-3-14/h2-13,31-33,35,37-41,44-46H,1H3,(H,47,48)