Using CCOC(=O)C(C(=O)OCC)c1cccc(C(=O)c2ccccc2)c1[N+](=O)[O-], CI to produce CCOC(=O)C(C)(C(=O)OCC)c1cccc(C(=O)c2ccccc2)c1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.