[3-(3,4-dichlorophenyl)-2-(ethylcarbamoyloxymethyl)-6,7-dihydro-5H-pyrrolizin-1-yl]methyl N-ethylcarbamate

1-[2-(dimethylamino)ethyl]-3-ethylurea

1-(2-氯苯基)-3-乙基脲

4-ethyl-1-isonicotinoyl semicarbazide

3-乙基-1-丙基脲