(2S,4S)-4-((4,4-dimethylpent-2-yn-1-yl)(methyl)amino)-1-(2,2-diphenylacetyl)pyrrolidine-2-carboxylic acid

(2S,4S)-1-(2,2-diphenylacetyl)-4-((2-(4-fluorophenoxy)ethyl)(methyl)amino)pyrrolidine-2-carboxylic acid