1 E67 7-[(5-aminopentyl)oxy]-N~4~-(1-benzylpiperidin-4-yl)-N~2~-[3-(dimethylamino)propyl]-6-methoxyquinazoline-2,4-diamine 1.000 2 E11 N~4~-(1-benzylpiperidin-4-yl)-N~2~-[3-(dimethylamino)propyl]-6,7-dimethoxyquinazoline-2,4-diamine 0.875 3 NY8 ~{N}2-[3-(dimethylamino)propyl]-6,7-dimethoxy-~{N}4-[1-(naphthalen-2-ylmethyl)piperidin-4-yl]quinazoline-2,4-diamine 0.795 4 E72 7-[(5-aminopentyl)oxy]-N~4~-[1-(5-aminopentyl)piperidin-4-yl]-N~2~-[3-(dimethylamino)propyl]-6-methoxyquinazoline-2,4-diamine 0.756