You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[(2R)-2-[3-fluoro-5-[(6-methylpyridin-3-yl)carbamoylamino]phenoxy]propyl]-N-methoxyacetamide into its molecular formula.
user
C19H23FN4O4
assistant