(2R-(2alpha,3beta,4alpha)-4-(1,3-benzodioxol-5-yl)-1-(2-(2,6-diethylphenyl)amino)-2-oxoethyl)-2-(4-propoxyphenyl)-3-pyrrolidinecarboxylic acid
(2r-(2alpha,3beta,4alpha)-4-(1,3-benzodioxol-5-yl)-1-(2-(2,6-diethylphenyl)amino)-2-oxoethyl)-2-(4-propoxyphenyl)-3-pyrrolidinecarboxylic acid