You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-(3-fluoro-4-methylphenyl)-2-[(4S)-4-(2-methylsulfanylethyl)-2,5-dioxoimidazolidin-1-yl]acetamide into its molecular formula.
user
C15H18FN3O3S
assistant