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-[2-[2-(2-fluorophenyl)-5-methyl-1,3-oxazol-4-yl]ethyl]-2-(2-methoxyphenoxy)acetamide .
user
C21H21FN2O4
assistant