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