(S)-1-((S)-2-methyl-3-(((perfluorophenyl)methyl)thio)propanoyl)pyrrolidine-2-carboxylic acid; ((S)-2-methyl-3-(((perfluorophenyl)methyl)thio)propanoyl)-L-proline
(S)-1-((S)-2-methyl-3-(((perfluorophenyl)methyl)thio)propanoyl)pyrrolidine-2-carboxylic acid; ((S)-2-methyl-3-(((perfluorophenyl)methyl)thio)propanoyl)-L-proline