Using COC(=O)[C@@H]1C[C@H](NC(=O)OCC(Cl)(Cl)Cl)CN1C(=O)OC(C)(C)C, CI to produce COC(=O)[C@@H]1C[C@H](N(C)C(=O)OCC(Cl)(Cl)Cl)CN1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.