InChI=1S/C35H22O16/c36-15-5-1-12(2-6-15)21(31(42)43)26(39)27(40)25(33(46)47)18-11-20(38)29-24-17(18)9-14(10-19(24)34(48)50-29)22-28(41)30(51-35(22)49)23(32(44)45)13-3-7-16(37)8-4-13/h1-11,21,25-26,36-39,41H,(H,42,43)(H,44,45)(H,46,47)/b30-23-