You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[5-[[2-[(4-methylphenyl)methoxy]phenyl]methylidene]-4-oxo-1,3-thiazol-2-yl]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H18N2O3S
assistant