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