Complex sentence: It is around 5x more potent a stimulant than cocaine, but is relatively unselective, binding to all three monoamine transporters although still with some selectivity for the dopamine transporter.
Split into simpler sentences: It is around 5 times more potent a stimulant than cocaine, but is relatively unselective. It binds to all three monoamine transporters, although still with some selectivity for the dopamine transporter.