![4a,5-dihydropyrrolo[3,2-d]pyrimidine-2,4-quinone](http://zinc12.docking.org/img/rings/354764.gif)
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![4a,5-dihydropyrano[2,3-d]pyrimidine-2,4-quinone](http://zinc12.docking.org/img/rings/591629.gif)
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![5,8-dihydro-4aH-pyrido[2,3-d]pyrimidine-2,4-quinone](http://zinc12.docking.org/img/rings/357198.gif)
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![4-oxa-7,9-diazaspiro[4.5]deca-1,9-diene-3,6,8-trione](http://zinc12.docking.org/img/rings/247175.gif)
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![N-[(2,6-diketo-5H-pyrimidin-5-yl)methyleneamino]benzenesulfonamide](http://zinc12.docking.org/img/rings/597072.gif)
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![4a,5,7,8,9,10-hexahydropyrimido[4,5-b]quinoline-2,4,6-trione](http://zinc12.docking.org/img/rings/357195.gif)
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![Spiro[2,4-dihydro-1H-quinoline-3,5'-pyrimidine]-2',4'-quinone](http://zinc12.docking.org/img/rings/100146.gif)
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![5-[(5-phenyl-2-furyl)methyleneamino]-5H-pyrimidine-2,4-quinone](http://zinc12.docking.org/img/rings/597544.gif)
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![Spiro[1,2,3,4,4a,6-hexahydropyrazino[1,2-a]quinoline-5,5'-pyrimidine]-2',4'-quinone](http://zinc12.docking.org/img/rings/54090.gif)
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![5-(2,6-diketo-5H-pyrimidin-5-yl)-6-phenyl-1,5-dihydropyrrolo[2,3-d]pyrimidine-2,4-quinone](http://zinc12.docking.org/img/rings/604988.gif)
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![3-phenyl-5,5-bis[2-(4-pyridyl)ethyl]pyrimidine-2,4-quinone](http://zinc12.docking.org/img/rings/195283.gif)
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![5-[(4,6-diketo-1-phenyl-pyrimidin-5-ylidene)methyl]-3-phenyl-6-pyridin-1-ium-1-yl-5H-pyrimidine-2,4-quinone](http://zinc12.docking.org/img/rings/602441.gif)
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