Using CCCCCCCCCCS, O=C(O)CN1C(=O)c2cccc3c(Cl)ccc(c23)C1=O to produce CCCCCCCCCCSc1ccc2c3c(cccc13)C(=O)N(CC(=O)O)C2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.