Using CCOC(=O)C1(C)O[C@@H]2CCCC[C@H]2NC1=O, CI to produce CCOC(=O)C1(C)O[C@@H]2CCCC[C@H]2N(C)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.