[4-(4-Hydroxy-6,7-dimethoxyquinazolin-2-yl)piperazin-1-yl][(2RS)-oxolan-2-yl]methanone; 1-(4-Hydroxy-6,7-dimethoxy-2-quinazolinyl)-4-[(tetrahydro-2-furanyl)carbonyl]piperazine