1 E72 7-[(5-aminopentyl)oxy]-N~4~-[1-(5-aminopentyl)piperidin-4-yl]-N~2~-[3-(dimethylamino)propyl]-6-methoxyquinazoline-2,4-diamine 1.000 2 E67 7-[(5-aminopentyl)oxy]-N~4~-(1-benzylpiperidin-4-yl)-N~2~-[3-(dimethylamino)propyl]-6-methoxyquinazoline-2,4-diamine 0.756