Using O=C(Oc1ccccc1)c1c2ccccc2nc2c1ccc1ccccc12 to produce O=C(Oc1ccccc1)C1c2ccccc2Nc2c1ccc1ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.