InChI=1S/C17H16N4O2/c22-16-11-5-3-6-12(15(11)13-7-4-10-21(13)16)19-17(23)20-14-8-1-2-9-18-14/h1-3,5-6,8-9,13H,4,7,10H2,(H2,18,19,20,23)/t13-/m1/s1