InChI=1S/C36H34O19/c37-13-24-27(43)32(54-25(42)8-2-14-1-7-18(39)19(40)9-14)31(47)36(53-24)50-17-10-22-26(20(41)12-21(51-22)15-3-5-16(38)6-4-15)23(11-17)52-35-30(46)28(44)29(45)33(55-35)34(48)49/h1-12,24,27-33,35-40,43-47H,13H2,(H,48,49)/b8-2+