Using O=C(Cl)C1CCCCC1, C[C@H](CS)C(=O)N1CSC[C@H]1C(=O)O to produce C[C@H](CSC(=O)C1CCCCC1)C(=O)N1CSC[C@H]1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.