Using Clc1ccsc1, O=C(Cl)c1cc([N+](=O)[O-])ccc1Cl to produce O=C(c1cc([N+](=O)[O-])ccc1Cl)c1sccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.