Using COC(=O)c1cc2cc(OC)c(OC)cc2c(-c2ccnc(Br)c2)c1C(=O)OC to produce COc1cc2cc(CO)c(CO)c(-c3ccnc(Br)c3)c2cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.