Using BrC(Br)(Br)Br, CC1(C)SCCN(S(=O)(=O)c2ccc(OCC#CCCO)cc2)C1(C)C(N)=O to produce CC1(C)SCCN(S(=O)(=O)c2ccc(OCC#CCCBr)cc2)C1C(N)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.