Synonyms: L-Ornithine,N2,N5-bis[(1,1-dimethylethoxy)carbonyl]-N5-[[[(1,1-dimethylethoxy)carbonyl]amino]iminomethyl]-;11-Oxa-2,4,9-triazatridecanoic acid,8-carboxy-4-[(1,1-dimethylethoxy)carbonyl]-3-imino-12,12-dimethyl-10-oxo-,1-(1,1-dimethylethyl) ester, (S)-