Using COC(=O)c1ccc(S(C)(=O)=O)c(C2CC(C)=NO2)c1Cl, CO to produce CC1=NOC(c2c(Cl)c(C(=O)O)cc(C)c2S(C)(=O)=O)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.