Using NCc1ccccc1N1CCOCC1, O=C(O)c1ccn2nc(-c3ccccc3)cc2n1 to produce O=C(NCc1ccccc1N1CCOCC1)c1ccn2nc(-c3ccccc3)cc2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.