![2-indolin-5-ylsulfonyl-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/52762.gif)
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![2-[2-(1H-indol-3-yl)acetyl]-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/119170.gif)
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![2-[(2-keto-1,3-dihydrobenzimidazol-5-yl)sulfonyl]-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/119231.gif)
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![6-[(4-keto-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-2-yl)sulfonyl]-3H-1,3-benzoxazol-2-one](http://zinc12.docking.org/img/rings/52758.gif)
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![2-(2,3-dihydro-1,4-benzodioxin-6-ylsulfonyl)-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/52750.gif)
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![2-(2-ketoindolin-5-yl)sulfonyl-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/52767.gif)
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![2-(1,2,3,4-tetrahydroquinolin-6-ylsulfonyl)-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/52773.gif)
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![N-(4H-1,3-benzodioxin-8-yl)-4-keto-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinoline-2-carboxamide](http://zinc12.docking.org/img/rings/97922.gif)
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![2-(2-keto-1H-quinoline-3-carbonyl)-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/119134.gif)
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![2-[2-(2,3-dihydro-1,4-benzodioxin-6-yl)acetyl]-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/119132.gif)
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![2-[3-(1,3-benzodioxol-5-yl)propanoyl]-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/119252.gif)
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![2-[3-(2-keto-1H-quinolin-3-yl)acryloyl]-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/119149.gif)
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![2-[2-[(4-keto-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-2-yl)sulfonyl]ethyl]isoindoline-1,3-quinone](http://zinc12.docking.org/img/rings/52737.gif)
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![2-(1-phenylcyclopropanecarbonyl)-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/119259.gif)
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![2-[5-(2-furyl)isoxazole-3-carbonyl]-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/98639.gif)
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![2-(2-cyclopropyl-2-phenyl-acetyl)-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/119192.gif)
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![2-(4-pyrrol-1-ylbenzoyl)-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/98635.gif)
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![2-(1-cyclohexyl-5-keto-pyrrolidine-3-carbonyl)-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/119118.gif)
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![2-(5-keto-1-phenyl-prolyl)-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/119165.gif)
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![2-(5-keto-1-phenyl-pyrrolidine-3-carbonyl)-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/119162.gif)
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![2-(3-phenylbenzoyl)-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/66403.gif)
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![2-(4-phenylbenzoyl)-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/66402.gif)
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![2-(4-pyrrolidinosulfonylbenzoyl)-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/52729.gif)
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![2-(3,3-diphenylpropanoyl)-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/52719.gif)
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![2-(4-morpholinosulfonylbenzoyl)-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/52733.gif)
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![2-(3-cyclopropylimidazo[1,5-a]pyridine-1-carbonyl)-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/119167.gif)
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![2-(adamantane-1-carbonyl)-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one](http://zinc12.docking.org/img/rings/66421.gif)
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