Using CCOC(=O)C=[N+]=[N-], CC12CCC(C(=O)C1=O)C2(C)C to produce CCOC(=O)C1C(=O)C2CCC(C)(C1=O)C2(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.