1-Piperazinecarboxamide, 4-(4-amino-6,7-dimethoxy-2-quinazolinyl)-N-(4-ethoxyphenyl)- 2-(4-(4-Ethoxyphenyl)carbamoylpiperazin-1-yl)-4-amino-6,7-dimethoxyquinazoline 4-(4-Amino-6,7-dimethoxy-2-quinazolinyl)-N-(4-ethoxyphenyl)-1-piperazinecarboxamide 79221-33-3