InChI=1S/C40H32O17/c1-38-13-20(18-4-2-17(42)11-26(18)55-38)39-30(35(38)49)29-23(45)7-15(9-28(29)56-40(39,57-39)19-5-3-16(41)10-21(19)43)24-8-14-6-22(44)27(12-25(14)52-24)53-37-33(48)31(46)32(47)34(54-37)36(50)51/h2-12,20,30-34,37,41-48H,13H2,1H3,(H,50,51)