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