Using CON, O=Cc1ccccc1OC1CCN(C(=O)CNC(=O)c2cc(-c3ccccc3)[nH]n2)CC1 to produce CON=Cc1ccccc1OC1CCN(C(=O)CNC(=O)c2cc(-c3ccccc3)[nH]n2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.