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2,4-dimethyl-9-nitro-5-phenyl-1,2,3,4,5,6-hexahydrobenzo[b]pyrimido[4,5-h][1,6]naphthyridine-1,3,6-trione |
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6,8-dimethyl-2-(4-nitrophenyl)-5-phenyl-4,5,6,7,8,9-hexahydropyrimido[5',4':5,6]pyrido[3,4-d][1,3]oxazole-4,7,9-trione |
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2,4-dimethyl-5-phenyl-1,2,3,4,5,6-hexahydrobenzo[b]pyrimido[4,5-h][1,6]naphthyridine-1,3,6-trione |
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