You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1R)-1-(4-amino-2-oxabicyclo[2.2.2]octan-1-yl)-2-(3-fluoro-6-methoxy-1,5-naphthyridin-4-yl)ethanol The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H22FN3O3
assistant