Using O=C(OC(Cl)(Cl)Cl)OC(Cl)(Cl)Cl, CC(C)(N)C(O)COCc1ccccc1 to produce CC1(C)NC(=O)OC1COCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.