InChI=1S/C37H28O17/c1-50-16-5-2-13(3-6-16)22-12-21(42)27-28(43)30(45)34(53-37-32(47)29(44)31(46)35(54-37)36(48)49)25(33(27)52-22)17-8-14(4-7-18(17)39)23-11-20(41)26-19(40)9-15(38)10-24(26)51-23/h2-12,29,31-32,35,37-40,43-47H,1H3,(H,48,49)