Using COC(CN)OC, CC(=O)c1ccccc1NS(=O)(=O)c1ccccc1C to produce COC(CN=C(C)c1ccccc1NS(=O)(=O)c1ccccc1C)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.