Using O=C(Cl)c1ccncc1, COc1cc(Cl)c(-c2csc(N)n2)c(Cl)c1 to produce COc1cc(Cl)c(-c2csc(NC(=O)c3ccncc3)n2)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.