Complex sentence: Reuptake and release at D 1 and D 2 receptors, similar to, but less potent than, psychostimulants, dopamine agonists, and atypical antidepressant buproprion on dopaminergic mechanisms (increase in release and blockade of reuptake inhibition).
Split into simpler sentences: Reuptake and release at D 1 and D 2 receptors. Similar but less potent than psychostimulants, dopamine agonists, and the atypical antidepressant buproprion on dopaminergic mechanisms (increase in release and blockade of reuptake inhibition).