Using CNS(=O)(=O)Cc1ccc2[nH]cc(C3CCN(C)C3=O)c2c1 to produce CNS(=O)(=O)Cc1ccc2[nH]cc(C3CCN(C)C3)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.