Using Nc1ccc([N+](=O)[O-])cc1C(SCCC(=O)O)c1ccccc1Cl to produce O=C1CCSC(c2ccccc2Cl)c2cc([N+](=O)[O-])ccc2N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.