InChI=1S/C36H26O17/c37-16-5-1-3-11-19(20-12-4-2-6-17(38)22(12)27(41)24-14(20)9-15(34(48)49)25(39)28(24)42)13-7-10(33(46)47)8-18(23(13)26(40)21(11)16)52-36-31(45)29(43)30(44)32(53-36)35(50)51/h1-9,19-20,29-32,36-39,42-45H,(H,46,47)(H,48,49)(H,50,51)