InChI=1S/C18H20N8/c1-2-24-8-10-25(11-9-24)17-22-16-14(12-19)13-20-26(16)18(23-17)21-15-6-4-3-5-7-15/h3-7,13H,2,8-11H2,1H3,(H,21,22,23)