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-(3,4-difluorophenyl)-1,3-thiazol-2-yl]-2-[(4-ethyl-5-pyridin-4-yl-1,2,4-triazol-3-yl)sulfanyl]acetamide .
user
C20H16F2N6OS2
assistant