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