InChI=1S/C35H24O15/c36-16-8-6-14(7-9-16)21(31(41)42)26(38)27(39)25(33(45)46)18-12-20(37)29-24-17(18)10-15(11-19(24)34(47)49-29)22-28(40)30(50-35(22)48)23(32(43)44)13-4-2-1-3-5-13/h1-12,23,25,27,30,36-40H,(H,41,42)(H,43,44)(H,45,46)/b26-21-