(2S)-1-(2-aminochloranuidylacetyl)-4,4-difluoropyrrolidine-2-carbonitrile;(2S)-4,4-difluoro-1-[4-oxo-4-[3-[(E)-2-[4-(trifluoromethoxy)phenyl]prop-1-enyl]-4-pyridinyl]butanoyl]pyrrolidine-2-carbonitrile;1-ethynyl-4-(trifluoromethoxy)benzene;methyl 3-bromopyridine-4-carboxylate;methyl 3-[(E)-2-[4-(trifluoromethoxy)phenyl]prop-1-enyl]pyridine-4-carboxylate;4,4,5,5-tetramethyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,3,2-dioxaborolane;4,4,5,5-tetramethyl-2-[(E)-2-[4-(trifluoromethoxy)phenyl]prop-1-enyl]-1,3,2-dioxaborolane;3-[(E)-2-[4-(trifluoromethoxy)phenyl]prop-1-enyl]pyridine-4-carboxylic acid