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