You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (5S)-5-[(3R)-1-[3-(4-fluorophenoxy)propyl]piperidin-3-yl]-5-methylimidazolidine-2,4-dione into its molecular formula.
user
C18H24FN3O3
assistant