Using CC(C)(C)OC(=O)N1CC(C(O)c2ccc(Cl)c(Cl)c2)C1, CI to produce COC(c1ccc(Cl)c(Cl)c1)C1CN(C(=O)OC(C)(C)C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.