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