61342-68-5

L-Phenylalanine,N-[N-[N-[N-[N-[(2-nitrophenyl)thio]-O-(phenylmethyl)-L-seryl]-L-methionyl]-L-a-glutamyl]-L-histidyl]-, 1-(1,1-dimethylethyl) 5-(phenylmethyl) ester