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![5H-5-Methyl-6,7-dihydrocyclopenta[b]pyrazine](https://api.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/structures/977/118/0f103486-e428-4abd-a429-3075804ae8e8/640/0f103486-e428-4abd-a429-3075804ae8e8.png)