Using COC(=O)Cc1ccccc1Br, COc1cc(C=O)cc(Cl)c1O to produce COC(=O)C(Oc1c(Cl)cc(CO)cc1OC)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.