(2-Butoxyphenyl)carbamic acid 2-(1-piperidinyl)-1-(1-piperidinylmethyl)ethyl ester HCl 113873-28-2 2-(1-Piperidinyl)-1-(1-piperidinylmethyl)ethyl (2-butoxyphenyl)carbamate dihydrochloride Carbamic acid, (2-butoxyphenyl)-, 2-(1-piperidinyl)-1-(1-piperidinylmethyl)ethyl ester, dihydrochloride