N'-{2-[(S)-4-Carbamoyl-2-(4-methoxy-benzyloxycarbonylamino)-butyrylamino]-acetyl}-hydrazinecarboxylic acid 2,2,2-trichloro-1,1-dimethyl-ethyl ester

Z(OMe)-Asp(OBzl)-Val-Gln-Ala-NHNH2

Z(OMe)-Asn-Gln-Met(O)-OMe

Z(OMe)-Ala-Gln-Gln-Ala-OMe

Z(OMe)-Val-Cys(MBzl)-Ser-Gln-Lys(Z)-OH