InChI=1/C21H16N2O4/c1-26-15-9-13(10-16(11-15)27-2)12-22-23-20(24)17-7-3-5-14-6-4-8-18(19(14)17)21(23)25/h3-12H,1-2H3/b22-12+ C84F60AC2A96F313