Using COCOc1ccc(C=CCCl)cc1[N+](=O)[O-], Sc1ccc(Cl)cc1 to produce COCOc1ccc(C=CCSc2ccc(Cl)cc2)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.