InChI=1S/C36H26O17/c37-16-3-1-12(5-15(16)27-20(41)9-21(42)29-23(44)11-25(52-33(27)29)13-2-4-17(38)18(39)6-13)24-10-22(43)28-19(40)7-14(8-26(28)51-24)50-36-32(47)30(45)31(46)34(53-36)35(48)49/h1-11,30-32,34,36-42,45-47H,(H,48,49)