Using S=c1[nH]c2cc(Cl)c(C#Cc3ccccc3)cc2[nH]1, O=C(O)CBr to produce O=C(O)CSc1nc2cc(C#Cc3ccccc3)c(Cl)cc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.