| 3-(2-chlorophenyl)-5-(4-nitrophenylmethylene)-4-imidazolidinedione |
| 3-(2-chlorophenyl)-5-(4-nitrophenylmethylene)-2,4-imidazolidinedione |
| 3-(o-chlorophenyl)-5-(p-nitrobenzylidene)-hydantoi |
| 3-(2-chlorophenyl)-5-(4-nitrophenylmethylene)-4-imidazolidinedione |
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