Using COC(=O)c1cc(Br)cc(NC2CCN(C)CC2)c1C, O=C([O-])[O-] to produce COC(=O)c1cc(Br)cc(N(C)C2CCN(C)CC2)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.