InChI=1/C16H11N5O/c22-16-12(15(20-21-16)14-9-17-5-6-18-14)8-11-7-10-3-1-2-4-13(10)19-11/h1-9,19H,(H,21,22)/b12-8-/f/h21H F2FAED4A731D1979