InChI=1/C13H8N2O3/c16-12-8-4-3-7-2-1-5-14-10(7)11(8)15-6-9(12)13(17)18/h1-6H,(H,15,16)(H,17,18)/p-1/fC13H7N2O3/h16H/q-1 B287E9CC6664CFCF