Using CCBr, CCN1C(=O)CNCc2cc(OC)c([N+](=O)[O-])cc21 to produce CCN1CC(=O)N(CC)c2cc([N+](=O)[O-])c(OC)cc2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.