InChI=1/C21H16N2O4/c1-13(24)23-12-15(17-8-3-4-9-19(17)23)11-18-21(25)27-20(22-18)14-6-5-7-16(10-14)26-2/h3-12H,1-2H3/b18-11+ CEE5D1DF031329E1