Using BrCc1ccccc1, COc1cc(O)c2c(c1)OC(C)(C)OC2=O to produce COc1cc(OCc2ccccc2)c2c(c1)OC(C)(C)OC2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.