Using ClC(Cl)(Cl)Cl, CCS(=O)(=O)c1ccc(Oc2cc(CO)cc3ccc(Br)cc23)nc1 to produce CCS(=O)(=O)c1ccc(Oc2cc(CCl)cc3ccc(Br)cc23)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.