Using O=C(O)c1ccc2nc3c(c(=O)n2c1)CSC3, O=C1CCC(=O)N1Cl to produce O=C(O)c1ccc2nc3c(Cl)scc3c(=O)n2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.