N-(2-cyanoethyl)-carbanilic acid-[3-(3,3-dimethylureido)-phenyl]-ester
N-(2-cyanoethyl)-carbanilic acid-[3-(3-methylureido)phenyl]-ester
N-(2-cyanoethyl)-carbanilic acid-[3-(3-isopropylureido)-phenyl]-ester
N-(2-cyanoethyl)-carbanilic acid-[3-(3-propylureido)-phenyl]-ester
N-(2-cyanoethyl)-carbanilic acid-[3-(3-cyclopropylureido)-phenyl]-ester