{(1S,6S)-6-Benzyloxycarbonylamino-1,6-bis-[({3-[(9H-fluoren-9-ylmethoxycarbonyl)-propyl-amino]-propylcarbamoyl}-methyl)-carbamoyl]-hexyl}-carbamic acid benzyl ester

{(E)-(1S,6S)-6-Benzyloxycarbonylamino-1,6-bis-[({3-[(9H-fluoren-9-ylmethoxycarbonyl)-propyl-amino]-propylcarbamoyl}-methyl)-carbamoyl]-hex-3-enyl}-carbamic acid benzyl ester

(E)-(2S,7S)-2-Amino-7-benzyloxycarbonylamino-oct-4-enedioic acid dimethyl ester

(2S,4E,7S)-2,7-bis(benzyloxycarbonylamino)oct-4-en-1,8-dioic acid

dimethyl (2S,4E,7S)-2,7-bis(benzyloxycarbonylamino)oct-4-en-1,8-dioate