4-(2-(3,5-Dinitrophenyl)-4-oxo-3(4H)-quinazolinyl)benzoic acid compd. with piperazine (2:1) 73265-38-0 Benzoic acid, 4-(2-(3,5-dinitrophenyl)-4-oxo-3(4H)-quinazolinyl)-, compd. with piperazine (2:1) Piperazine 1,4-bis(4-(2-(3,5-dinitrophenyl)-4-oxo-3(4H)-quinazolinyl)benzoate)