InChI=1S/C37H28O16/c1-49-21-8-7-15(23-10-18(39)27-24(50-23)13-20(41)29(42)30(27)43)9-16(21)26-17(38)12-25(52-37-33(46)31(44)32(45)35(53-37)36(47)48)28-19(40)11-22(51-34(26)28)14-5-3-2-4-6-14/h2-13,31-33,35,37-38,41-46H,1H3,(H,47,48)