InChI=1S/C37H36O20/c1-52-32-23(12-53-24(44)7-3-13-2-5-15(38)17(40)8-13)55-34(30(48)29(32)47)26-20(43)11-22-25(19(42)10-21(54-22)14-4-6-16(39)18(41)9-14)33(26)56-37-31(49)27(45)28(46)35(57-37)36(50)51/h2-11,23,27-32,34-35,37-41,43,45-49H,12H2,1H3,(H,50,51)/b7-3+