4-Fluoro-L-Phe-Gly-3-[bis(2-chloroethyl)amino]-L-Phe-L-Nva-OEt

ethyl N-[3-[bis(2-chloroethyl)amino]-N-[N-(4-fluoro-3-phenyl-L-alanyl)glycyl]-3-phenyl-L-alanyl]-L-norvalinate