Using O=C1OC(Br)c2ccccc21, CC(C)Cc1ccc(C(C)C(=O)[O-])cc1 to produce CC(C)Cc1ccc(C(C)C(=O)OC2OC(=O)c3ccccc32)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.