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![methyl 8-boc-8-azabicyclo[3.2.1]octane-2-carboxylate](http://20039781.s21i.faiusr.com/3/ABUIABADGAAg_rvH7wUot8vuzQQwlwE4oAI.gif)
![methyl bicyclo[2.2.2]octane-1-carboxylate](http://20039781.s21i.faiusr.com/3/ABUIABADGAAg4pTC7wUooN3d8QYwnAE4dQ.gif)
![methyl imidazo[1,2-a]pyrazine-3-carboxylate](http://20039781.s21i.faiusr.com/3/ABUIABADGAAgrJPC7wUo8eXL4wMwrgE4mgE.gif)
![N-[(3R,4R)-4-fluoro-3-piperidinyl]-,1,1-dimethylethyl ester](http://20039781.s21i.faiusr.com/3/ABUIABADGAAgsIS87wUotMqkiwcwnwE48AE.gif)
