InChI=1/C19H20N6O/c1-19(2)9-11-10-21-18(22-12-7-5-4-6-8-12)23-14(11)16-13(19)15(17(20)26)24-25(16)3/h4-8,10H,9H2,1-3H3,(H2,20,26)(H,21,22,23)/f/h22H,20H2 1636DB8CF71F67B4