((S)-2-{(S)-2-[(S)-2-((S)-2-{(S)-2-[(R)-3-(Acetylamino-methylsulfanyl)-2-amino-propionylamino]-propionylamino}-propionylamino)-4-methyl-pentanoylamino]-pentanoylamino}-3-tert-butoxy-propionylamino)-acetic acid phenyl ester; hydrochloride

Bpoc-Cys(Acm)-Ala-Ala-Leu-Nva-Ser(tBu)-Gly-OPh