Using CC(=O)OC(C)=O, CC(=O)N1CCc2c(Br)ccc([N+](=O)[O-])c2C1 to produce CC(=O)Nc1ccc(Br)c2c1CN(C(C)=O)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.