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