4-amino-2-(4-methoxyphenyl)-1,2-dihydropyrimido[1,2-a]benzimidazole-3-carbonitrile InChI=1/C18H15N5O/c1-24-12-8-6-11(7-9-12)16-13(10-19)17(20)23-15-5-3-2-4-14(15)21-18(23)22-16/h2-9,16H,20H2,1H3,(H,21,22 pyrimido[1,2-a]benzimidazole-3-carbonitrile, 4-amino-1,2-dihydro-2-(4-methoxyphenyl)-