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