Using CCOC(=O)C(C)(C)Oc1ccc(CN(C)c2ccc(Cl)cc2)cc1 to produce CN(Cc1ccc(OC(C)(C)C(=O)O)cc1)c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.