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