You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (3S)-3-[2-(3-fluoro-4-methylanilino)-2-oxoethyl]-N-(thiophen-2-ylmethyl)morpholine-4-carboxamide into its molecular formula.
user
C19H22FN3O3S
assistant