Using COC(=O)C(C(C)c1ccccc1)[N+](=O)[O-], C=CC(=O)OC to produce COC(=O)CCC(C(CC(=O)OC)c1ccccc1)[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.