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