Boc-Arg(Mtr)-Gly-OBn
(S)-N-[[[4-amino-5-oxo-5-(2-thiazolyl)pentyl]amino]iminomethyl]-4-methoxy-2,3,6-trimethyl-benzenesulfonamide
[(1S)-1-(2-benzothiazolylcarbonyl)-4-[[imino[[(4-methoxy-2,3,6-trimethylphenyl)sulfonyl]amino]methyl]amino]butyl]carbamic acid 1,1-dimethylethyl ester