You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[2-fluoro-4-(1,4,5,6-tetrahydropyrimidin-2-yl)phenoxy]-1-morpholin-4-ylethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H20FN3O3
assistant