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