Using COC(=O)C(C)(C)Br, Cc1c(Cc2ccc(Cl)cc2)c(=O)[nH]c2c(Cl)ccc(O)c12 to produce COC(=O)C(C)(C)Oc1ccc(Cl)c2[nH]c(=O)c(Cc3ccc(Cl)cc3)c(C)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.