t-Boc-L-valine
(S)-2,3-dihydro-1H-indole-2-carboxylic acid ethyl ester
N-(tert-butoxycarbonyl)-N-methyl-L-alanine
tert-butyl (S)-1-((S)-2-(2,6-difluorophenylcarbamoyl)indolin-1-yl)-3-methyl-1-oxobutan-2-ylcarbamate
(S)-1-