for the following products
(4-(4-Amino-6,7-dimethoxyquinazolin-2-yl)piperazin-1-yl)(tetrahydrofuran-2-yl)methanone hydrochloride | 1-(4-Amino-6,7-dimethoxy-2-quinazolinyl)-4-[(tetrahydro-2-furanyl)carbonyl]piperazine | Terazosin hydrochloride and 1-(4-Amino-6,7-dimethoxy-2-quinazolinyl)4-[(tetrahydro-2-furanyl)carbonyl]piperazine hydrochloride
