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![4-keto-N-(1,3,4-thiadiazol-2-yl)-3H-thieno[2,3-d]pyrimidine-6-carboxamide](http://zinc12.docking.org/img/rings/139985.gif)
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![6-(2-iminothiazolidine-3-carbonyl)-3H-thieno[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/611377.gif)
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![N-(4-ketothieno[2,3-d]pyrimidin-3-yl)thiophene-2-carboxamide](http://zinc12.docking.org/img/rings/107692.gif)
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![N-cyclopropyl-2-[(4-keto-3H-thieno[2,3-d]pyrimidin-2-yl)thio]acetamide](http://zinc12.docking.org/img/rings/59657.gif)
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![2-(1,4-diazepan-1-ylmethyl)-3H-thieno[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/271255.gif)
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![2-(2-pyrrolidinoethylamino)-3H-thieno[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/310070.gif)
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![2-[(2-furfurylamino)methyl]-3H-thieno[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/268397.gif)
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![2-[(2-furfurylthio)methyl]-3H-thieno[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/510638.gif)
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![2-[(2-thenylamino)methyl]-3H-thieno[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/234679.gif)
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![2-[(3-pyridylamino)methyl]-3H-thieno[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/272993.gif)
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![2-[(3-pyridylthio)methyl]-3H-thieno[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/545988.gif)
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![2-[(4-pyridylthio)methyl]-3H-thieno[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/545497.gif)
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![3-(2-keto-2-pyrrolidino-ethyl)thieno[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/28149.gif)
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![3-(2-ketoazepan-3-yl)thieno[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/618459.gif)
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![3-(2-morpholinoethyl)thieno[2,3-d]pyrimidin-4-one](http://zinc12.docking.org/img/rings/28192.gif)
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