| 4-(2-(3-nitrophenyl)-4-oxo-3(4h)-quinazolinyl)-benzoic aci compd. with pipe |
| 4-(2-(3-nitrophenyl)-4-oxo-3(4h)-quinazolinyl)benzoic acid compd. with pipera |
| piperazine 1,4-bis(4-(2-(3-nitrophenyl)-4-oxo-3(4h)-quinazolinyl)benzoate) |
| 4-(2-(3-nitrophenyl)-4-oxo-3(4h)-quinazolinyl)-benzoic aci compd. withpiperazine (2:1) |
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