InChI=1/C18H15BrN4O4/c1-10-15(17(24)21-11-5-4-6-12(9-11)23(26)27)16(22-18(25)20-10)13-7-2-3-8-14(13)19/h2-9,16H,1H3,(H,21,24)(H2,20,22,25)/t16-/m1/s1/f/h20-22H 2A4E3BFF486D1430