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