Using CS(=O)(=O)c1ccc(C(=O)CC2(CC(=O)c3ccc(F)cc3)CCC2)cc1 to produce CS(=O)(=O)c1ccc(C2=C(c3ccc(F)cc3)CC3(CCC3)C2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.