InChI=1/C13H18N8O/c1-8(15-16-10-6-4-3-5-7-10)11-9(2)21(20-17-11)13-12(14)18-22-19-13/h3-7H2,1-2H3,(H2,14,18)/b15-8+/f/h14H2 B1CE41B3E8CDEB71