1-(2-Chloroethyl)-3-(4-cyanophenyl)urea1-(2-Chloroethyl)-1-(4-cyanophenyl)ureaN-(2-Chloroethyl)-N'-(4-cyanophenyl)ureaN-(2-Chloroethyl)-N'-(4-cyanophenyl)ureaUrea, N-(2-chloroethyl)-N'-(4-cyanophenyl)-N-(2-Chloroethyl)-N′-(4-cyanophenyl)urea, CAS 13908-43-5