Using C=C1CN(C(=O)OC(C)(C)C)C1, O=C(Cl)C(Cl)(Cl)Cl to produce CC(C)(C)OC(=O)N1CC2(CC(=O)C2(Cl)Cl)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.