Using COC(C)=O, CC(=N[S@@](=O)C(C)(C)C)c1ccccc1 to produce COC(=O)C[C@@](C)(N[S@@](=O)C(C)(C)C)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.