Oxpheneridine

1-(2-hydroxy-2-phenyl-ethyl)-4-phenyl-isonipecot ethyl ester

ethyl 1-(2-hydroxy-2-phenylethyl)-4-phenylpiperidine-4-carboxylate

ethyl 1-(2-hydroxy-2-phenyl-ethyl)-4-phenyl-piperidine-4-carboxylate