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