Using O=C(CCl)C1CCCS1, O=C(COc1ccccc1)N[C@@H]1C(=O)N[C@@H]1S to produce O=C(COc1ccccc1)N[C@@H]1C(=O)N[C@@H]1SCC(=O)C1CCCS1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.