Using Brc1ccc(Br)cc1, CON(C)C(=O)C1CCN(c2ncccn2)CC1 to produce O=C(c1ccc(Br)cc1)C1CCN(c2ncccn2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.