InChI=1/C14H14N4O3/c1-3-8-11(19)16-13(17-12(8)20)18-14-15-9-6-7(2)4-5-10(9)21-14/h4-6H,3H2,1-2H3,(H3,15,16,17,18,19,20)/f/h16-18H 990A2CA22CD0B54D