Using CC(C)(C)[S@@](=O)N[C@@](C)(CCO)c1cccc(F)c1Cl to produce CC(C)(C)[S@@](=O)N[C@@](C)(CC=O)c1cccc(F)c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.