Using CCOC(=O)CC(C)=O, CCOC(=O)C1=C(C)NC(C)=C(C(=O)OCC)C1c1cccc[n+]1[O-] to produce O=Cc1cccc[n+]1[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.