InChI=1S/C40H32O17/c1-38-13-20(28-22(45)9-18(43)12-27(28)55-38)39-30(35(38)49)29-21(44)6-15(23-7-14-2-3-16(41)10-24(14)52-23)8-26(29)56-40(39,57-39)19-5-4-17(42)11-25(19)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)