Using ClC(Cl)(Cl)C(Cl)(Cl)Cl, Nc1cccc(C=C2c3ccc(Cl)cc3CCc3sccc32)c1 to produce Nc1cccc(C=C2c3ccc(Cl)cc3CCc3sc(Cl)cc32)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.