InChI=1S/C40H32O17/c41-14-38-13-22(20-5-3-18(43)11-26(20)55-38)39-30(35(38)49)29-23(45)7-16(24-8-15-1-2-17(42)10-25(15)52-24)9-28(29)56-40(39,57-39)21-6-4-19(44)12-27(21)53-37-33(48)31(46)32(47)34(54-37)36(50)51/h1-12,22,30-34,37,41-48H,13-14H2,(H,50,51)