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