Z-Leu-Lys(Mtr)-Ala-Leu-Ala-OtBu

tert-butyl N6-((4-methoxy-2,3,6-trimethylphenyl)sulfonyl)-N2-((4-methoxy-2,3,6-trimethylphenyl)sulfonyl)-L-isoleucyl-L-asparaginyl-L-leucyl-L-lysyl-L-alanyl-L-leucyl-L-alaninate

tert-butyl N2-((benzyloxy)carbonyl)-L-asparaginyl-L-leucyl-N6-((4-methoxy-2,3,6-trimethylphenyl)sulfonyl)-L-lysyl-L-alanyl-L-leucyl-L-alaninate

(S)-2-((S)-2-{(S)-2-[(S)-2-((S)-2-Amino-4-methyl-pentanoylamino)-6-(4-methoxy-2,3,6-trimethyl-benzenesulfonylamino)-hexanoylamino]-propionylamino}-4-methyl-pentanoylamino)-propionic acid tert-butyl ester