You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[(1-benzofuran-5-ylmethylamino)methyl]-4-fluorocyclohexane-1-carboxylic acid;2,2,2-trifluoroacetic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H21F4NO5
assistant