| 4-oxo-2-phenyl-3(4h)-quinazolineacetic aci compd. with piperazine (2:1) |
| 4-oxo-2-phenyl-3(4h)-quinazolineacetic acid compd. with piperazine (2:1) |
| piperazine, bis(4-oxo-2-phenyl-3(4h)-quinazolineacetate) (2:1) |
| 4-oxo-2-phenyl-3(4h)-quinazolineacetic aci compd.with piperazine (2:1) |
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