58623-60-2

L-Cysteine,N-[N-[N-[N-[N-[N-[N-[(1,1-dimethylethoxy)carbonyl]-S-methyl-L-cysteinyl]-S-methyl-L-cysteinyl]-S-methyl-L-cysteinyl]-S-methyl-L-cysteinyl]-S-methyl-L-cysteinyl]-S-methyl-L-cysteinyl]-S-methyl-, methyl ester