Using COc1ccc(Oc2c(Br)cc(OC(=O)c3ccccc3)cc2Br)cc1Cc1ccc(F)cc1 to produce COc1ccc(Oc2c(Br)cc(O)cc2Br)cc1Cc1ccc(F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.