label: benzyl(2S,4R)-2-(((2S)-1-((2-cyanoethyl)amino)-1-oxo-4-phenylbutan-2-yl)carbamoyl)-4-hydroxypyrrolidine-1-carboxylate
label_lc: benzyl(2s,4r)-2-(((2s)-1-((2-cyanoethyl)amino)-1-oxo-4-phenylbutan-2-yl)carbamoyl)-4-hydroxypyrrolidine-1-carboxylate