Using BrCc1ccccc1, CCCc1cc(Cl)c2oc(C(=O)O)c(C)c2c1O to produce CCCc1cc(Cl)c2oc(C(=O)OCc3ccccc3)c(C)c2c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.