Using Nc1cccc(NC(=O)C[N+](=O)[O-])c1, CCOC(=O)CC(C)=O to produce CCOC(=O)CC(C)Nc1cccc(NC(C)=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.