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