1-Piperazinecarboxamide, 4-(4-amino-6,7-dimethoxy-2-quinazolinyl)-N-cyclopentyl- 2-(4-Cyclopentylcarbamoylpiperazin-1-yl)-4-amino-6,7-dimethoxyquinazoline 4-(4-Amino-6,7-dimethoxy-2-quinazolinyl)-N-cyclopentyl-1-piperazinecarboxamide 79221-18-4