Using O=C(CCl)N1CCN(c2ccc(Cl)cc2)CC1, Brc1ccccc1-c1nnn[nH]1 to produce O=C(Cn1nnnc1-c1ccccc1Br)N1CCN(c2ccc(Cl)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.