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