Using CCBr, CC(C)(C)C(O)C(Oc1ccc(Cl)cc1Cl)n1ccnc1 to produce CCOC(C(Oc1ccc(Cl)cc1Cl)n1ccnc1)C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.