You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-(4-fluorophenyl)-2-[4-[(E)-3-oxo-3-(1,3-thiazol-2-yl)prop-1-enyl]phenyl]acetamide .
user
C20H15FN2O2S
assistant