Using ClC=CCCl, CC(C)(C)OC(=O)Nc1ccc2cc(S(C)(=O)=O)ccc2c1Br to produce CC(C)(C)OC(=O)N(CC=CCl)c1ccc2cc(S(C)(=O)=O)ccc2c1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.