InChI=1S/C37H32O17/c1-11-6-16(38)24-26(41)20-14(8-13(48-3)9-18(20)40)21(32(24)51-11)22-15-10-19(49-4)31(53-37-30(45)28(43)29(44)35(54-37)36(46)47)34(50-5)23(15)27(42)25-17(39)7-12(2)52-33(22)25/h6-10,28-30,35,37,40-45H,1-5H3,(H,46,47)