Propinetidine

[1-(2-phenylethyl)-4-prop-2-ynylpiperidin-4-yl] propanoate

[1-(2-phenylethyl)-4-prop-2-ynyl-piperidin-4-yl] propanoate

propionic acid [1-(2-phenylethyl)-4-propargyl-4-piperidyl] ester