InChI=1/C21H14N4O7/c22-15-16(24-21(31)25-19(15)29)20(30)32-8-14(26)23-9-5-6-12-13(7-9)18(28)11-4-2-1-3-10(11)17(12)27/h1-7H,8,22H2,(H,23,26)(H2,24,25,29,31)/f/h23-25H 734A49B15FAFEE4C