You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[[5-(4-bromophenyl)-4-(2-methylprop-2-enyl)-1,2,4-triazol-3-yl]sulfanyl]-N-[(E)-1-(4-nitrophenyl)ethylideneamino]acetamide by IUPAC nomenclature, provide its molecular formula.
user
C22H21BrN6O3S
assistant