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