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-bromo-4-methylphenyl)-2-[[4-(4-chlorophenyl)-5-thiophen-2-yl-1,2,4-triazol-3-yl]sulfanyl]acetamide .
user
C21H16BrClN4OS2
assistant