2-((S)-1-tert-butoxycarbonylamino-2-methyl-propyl)-thiazole-4-carboxylic acid ethyl ester

(5R,8S,11R,14S,16aS)-14-Benzyl-8-isopropyl-11-methyl-4,7,10,13,16-pentaoxo-hexadecahydro-3a,6,9,12,15-pentaaza-cyclopentacyclopentadecene-5-carbonitrile

Boc-L-Leu-L-Ala-L-Val-NH2