Using C#CCBr, COc1cc(CCNC(=O)C(O)c2ccc(Cl)c(Cl)c2)ccc1O to produce C#CCOc1ccc(CCNC(=O)C(O)c2ccc(Cl)c(Cl)c2)cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.