InChI=1S/C40H42O16/c41-16-28-32(46)34(48)36(50)39(55-28)52-25-12-21(13-26(15-25)53-40-37(51)35(49)33(47)29(17-42)56-40)31-30-20(4-1-18-2-7-22(43)8-3-18)11-24(45)14-27(30)54-38(31)19-5-9-23(44)10-6-19/h1-15,28-29,31-51H,16-17H2/b4-1+