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