You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[1-[cyclohexyl(1,3-thiazol-2-yl)amino]-1-oxopropan-2-yl] 5-chloro-2,3-dihydro-1-benzofuran-2-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H23ClN2O4S
assistant