Using CC(C)C(C(=O)OCC(O)(Cn1ccnc1)c1ccc(Cl)cc1Cl)c1ccc(Cl)cc1 to produce OCC(O)(Cn1ccnc1)c1ccc(Cl)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.