Using O=[N+]([O-])c1ccccc1CBr, CCCC[Sn](CCCC)(CCCC)c1sccc1C1OCCO1 to produce O=[N+]([O-])c1ccccc1Cc1sccc1C1OCCO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.