You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[2-(methylamino)-2-oxo-1-phenylethyl]-5-[(1-methylimidazol-2-yl)sulfanylmethyl]furan-2-carboxamide into its molecular formula.
user
C19H20N4O3S
assistant