InChI=1/C18H20N8O2/c19-16-22-17(23-18-21-15(24-26(16)18)14-6-3-9-28-14)20-10-12-4-1-7-25(12)11-13-5-2-8-27-13/h2-3,5-6,8-9,12H,1,4,7,10-11H2,(H3,19,20,21,22,23,24)/p+2/t12-/m1/s1/fC18H22N8O2/h20,22,25H,19H2/q+2 FF598B2007335E66