InChI=1S/C36H26O15/c37-18-7-6-15(8-17(18)27-20(39)11-21(40)29-23(42)13-24(50-33(27)29)14-4-2-1-3-5-14)25-12-22(41)28-19(38)9-16(10-26(28)49-25)48-36-32(45)30(43)31(44)34(51-36)35(46)47/h1-13,30-32,34,36-40,43-45H,(H,46,47)