InChI=1/C11H7N5O4/c17-10-11(18)14-7-4-9(16(19)20)8(3-6(7)13-10)15-2-1-12-5-15/h1-5H,(H,13,17)(H,14,18)/f/h13-14H CF85E1B3A63ADFCA