InChI=1S/C22H22N8/c1-2-6-16-15(5-1)19(13-27-29-21-23-9-10-24-21)17-7-3-4-8-18(17)20(16)14-28-30-22-25-11-12-26-22/h1-8,13-14H,9-12H2,(H2,23,24,29)(H2,25,26,30)/b27-13+,28-14+