InChI=1/C14H12N4O3/c15-12-7-5-10(6-8-12)14(19)17-16-9-11-3-1-2-4-13(11)18(20)21/h1-9H,15H2,(H,17,19)/b16-9+/f/h17H FDA6A16EA46A9A54