Using CCOC(=O)C1=C(C)NC(C)=C(C(=O)OCC)C1c1ccc[n+]([O-])c1Cl, CCOC(=O)CC(C)=O to produce O=Cc1ccc[n+]([O-])c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.