1,4-Pentanediamine, N(sup 1),N(sup 1)-diethyl-N(sup 4)-(2-(2-(3,4-dimethoxyphenyl)ethenyl)-4-quinazolinyl)-, dihydrochloride 2-(3',4'-Dimethoxystyryl)-4-(delta-diethylamino-alpha-methylbutylamino)quinazoline 2HCl 96474-81-6