15561-61-2 N,N'-Ethylene-2,2'-bis(bis(2-chloroethyl)amino)bispropionamide dihydrochloride N,N'-Ethylenebis(2-(bis(2-chloroethyl)amino)propionamide) dihydrochloride Propionamide, N,N'-ethylenebis(2-(bis(2-chloroethyl)amino)-, dihydrochloride