Using Cn1ccnc1C(O)c1cncc(Br)c1, O=C1NCCc2cc(Cl)ccc21 to produce Cn1ccnc1C(=O)c1cncc(N2CCc3cc(Cl)ccc3C2=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.