Using CCC(=O)c1cc(Cl)ccc1NS(=O)(=O)C(F)(F)F, C=CCON to produce C=CCON=C(CC)c1cc(Cl)ccc1NS(=O)(=O)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.