InChI=1S/C37H28O17/c1-50-15-5-2-13(3-6-15)22-10-20(41)27-19(40)9-18(39)26(34(27)52-22)16-8-14(4-7-17(16)38)23-11-21(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)