InChI=1S/C36H30O17/c37-14-4-1-12(2-5-14)32-27(25-19(42)10-18(41)24-20(43)11-21(50-33(24)25)13-3-6-16(39)17(40)7-13)28(44)26-22(51-32)8-15(38)9-23(26)52-36-31(47)29(45)30(46)34(53-36)35(48)49/h1-10,21,27,29-32,34,36-42,45-47H,11H2,(H,48,49)