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