You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4R)-4-[[N-ethyl-5-fluoro-2-(trifluoromethyl)anilino]methyl]-4,5-dihydro-1,3-oxazol-2-amine is the IUPAC name of a molecule. Please give its molecular formula.
user
C13H15F4N3O
assistant