You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1R,2S,4R)-N-[(1S)-1-(4-fluoro-3-methoxyphenyl)ethyl]-7-oxabicyclo[2.2.1]heptan-2-amine is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H20FNO2
assistant