InChI=1S/C10H12N6O2/c11-10-15-8-7(12-4-13-8)9(16-10)18-3-5-1-2-6(17)14-5/h4-5H,1-3H2,(H,14,17)(H3,11,12,13,15,16)/t5-/m1/s1