InChI=1S/C36H34O20/c37-14-4-1-12(7-16(14)39)2-6-23(43)52-11-22-26(44)27(45)29(47)33(54-22)25-19(42)10-21-24(18(41)9-20(53-21)13-3-5-15(38)17(40)8-13)32(25)55-36-31(49)28(46)30(48)34(56-36)35(50)51/h1-10,22,26-31,33-34,36-40,42,44-49H,11H2,(H,50,51)/b6-2+