Using CC(C)c1cc(C(=O)CBr)cc(C(C)C)c1O, COc1cc(C=O)ccc1O to produce COc1cc(C=O)ccc1OCC(=O)c1cc(C(C)C)c(O)c(C(C)C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.