Using O=C1C2=C(CCCC2)C(S)N1c1ccc(Cl)cc1F to produce O=C1C2=C(CCCC2)C(SSC2C3=C(CCCC3)C(=O)N2c2ccc(Cl)cc2F)N1c1ccc(Cl)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.