Using COc1ccc(CN)cc1Cl, CSc1nc(Cl)c(C(=O)O)c(Cl)n1 to produce COc1ccc(CNc2nc(SC)nc(Cl)c2C(=O)O)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.