Using O=C(Nc1ccc(Cl)c(-c2ccccn2)c1)c1ccc(S(=O)(=O)CCCBr)cc1Cl to produce C=CCS(=O)(=O)c1ccc(C(=O)Nc2ccc(Cl)c(-c3ccccn3)c2)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.