Ethyl phenyl(2-piperidinyl)acetate

Ethylphenidate (EPH) is a psychostimulant and a close analog of methylphenidate.
Ethylphenidate acts as both a dopamine reuptake inhibitor and norepinephrine reuptake inhibitor, meaning it effectively boosts the levels of the norepinephrine and dopamine neurotransmitters in the brain, by binding to, and partially blocking the transporter proteins that normally remove those monoamines from the synaptic cleft.
There have been anecdotal reports of a perforated septum resulting from even just a few uses of ethylphenidate by insufflation (snorting). This is almost certainly due to ethylphenidate being caustic or containing caustic impurities, as users report that insufflation is extremely painful.