Using NO, COC(=O)CCCCCS(=O)c1ccc(-c2ccc(Cl)cc2)cc1 to produce O=C(CCCCCS(=O)c1ccc(-c2ccc(Cl)cc2)cc1)NO, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.