Using COc1cc(Br)cc([N+](=O)[O-])c1NC(C)=O, C1COCCN1 to produce COc1cc(N2CCOCC2)cc([N+](=O)[O-])c1NC(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.