Synonyms: | tert-Butyl 14-(N-Boc-amino)-1-[3-(methoxycarbonyl)phenoxy]-13,15-dioxo-3,6,9-trioxa- 12,16-diazanonadecan-19-oate;6-[[(1,1-DiMethylethoxy)carbonyl]aMino]-19-[3-(Methoxycarbonyl)phenoxy]-5,7-dioxo-11,14,17-trioxa-4,8-diazanonadecanoic Acid 1,1-DiMethylethy |