Using CCOC(=O)CBr, O=C(Cc1cccc(O)c1)c1cccc(O)c1 to produce CCOC(=O)COc1cccc(CC(=O)c2cccc(O)c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.