InChI=1/C19H18N6/c1-13-10-14(2)24(23-13)19-22-21-15(3)25(19)20-12-16-8-9-17-6-4-5-7-18(17)11-16/h4-12H,1-3H3/b20-12+ 140280C5A9075EE5