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-fluorophenoxy)ethyl]-N-methyl-2-[3-(3-methylphenyl)-5-sulfanylidene-1H-1,2,4-triazol-4-yl]acetamide .
user
C20H21FN4O2S
assistant