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