Using Cc1ccc(S)cc1, O=C(O)C(Br)CCCCCc1ccc(Cl)cc1 to produce Cc1ccc(SC(CCCCCc2ccc(Cl)cc2)C(=O)O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.