InChI=1S/C40H40O17/c41-16-27-30(45)31(46)34(49)39(56-27)53-24-13-20(11-23(44)14-24)29-28-19(4-1-17-2-7-21(42)8-3-17)12-25(15-26(28)55-36(29)18-5-9-22(43)10-6-18)54-40-35(50)32(47)33(48)37(57-40)38(51)52/h1-15,27,29-37,39-50H,16H2,(H,51,52)/b4-1-