InChI=1/C19H25N5O/c1-13-11-16(15-8-5-4-7-14(13)15)21-19(25)20-12-18-23-22-17-9-3-2-6-10-24(17)18/h4-5,7-8,13,16H,2-3,6,9-12H2,1H3,(H2,20,21,25)/t13-,16-/m0/s1/f/h20-21H 5C83E2A383C82E1C