You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[(3-fluoro-4-methoxyphenyl)methylsulfanyl]-4-(3-methoxypropyl)-1H-1,2,4-triazol-5-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C14H18FN3O3S
assistant