Using C#CCO, Cc1nc2ncc(C(=O)NCc3ccc(Cl)cc3)c(O)c2cc1Br to produce Cc1nc2ncc(C(=O)NCc3ccc(Cl)cc3)c(O)c2cc1C#CCO, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.