Using O=S([O-])O, Cc1c2c(cn1CC(N)=O)CN=C(c1ccccc1Cl)c1cc(Cl)ccc1-2 to produce CC1C2=C(CN=C(c3ccccc3Cl)c3cc(Cl)ccc32)C(=O)N1CC(N)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.