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