L-Phenylalanine, 4-[bis(2-chloroethyl)amino]-N-[N-[N-(N-L-prolylglycyl)-L-valyl]-L-phenylalanyl]-, ethyl ester, dihydrochloride L-Phenylalanine, 4-[bis(2-chloroethyl)amino]-N-[N-[N-[N-(N-L-prolylglycyl)-L-valyl]-L-phenylalanyl]-, ethyl ester, dihydrochloride NSC241272