Using Nc1ccccc1Cl, O=C(O)Cn1c(-c2ccc(Br)cc2)nc2cccnc21 to produce O=C(Cn1c(-c2ccc(Br)cc2)nc2cccnc21)Nc1ccccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.