You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[5-(5-bromofuran-2-yl)-4-propyl-1,2,4-triazol-3-yl]sulfanyl]-N-[4-(4-methylphenyl)-1,3-thiazol-2-yl]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H20BrN5O2S2
assistant