butyl (2S)-2-[(2,2,2-trifluoroacetyl)amino]-3-[4-(2,2,2-trifluoroacetyl)oxyphenyl]propanoate;(2S)-3-[4-(2,2,2-trifluoro-1-oxoethoxy)phenyl]-2-[(2,2,2-trifluoro-1-oxoethyl)amino]propanoic acid butyl ester;(2S)-2-[(2,2,2-trifluoroacetyl)amino]-3-[4-(2,2,2-trifluoroacetyl)oxyphenyl]propionic acid butyl ester;butyl (2S)-2-(2,2,2-trifluoroethanoylamino)-3-[4-(2,2,2-trifluoroethanoyloxy)phenyl]propanoate
butyl (2S)-2-[(2,2,2-trifluoroacetyl)amino]-3-[4-(2,2,2-trifluoroacetyl)oxyphenyl]propanoate