Using O=C([O-])[O-], CC(C)OC(=O)c1ccc(Br)cc1CNC1CC1 to produce CC(C)OC(=O)c1ccc(Br)cc1CN(C)C1CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.