Using O=C(O)[C@@H]1CCCCN1c1nc2ccccc2o1, O[C@@H]1CCCN(Cc2ccccn2)C1 to produce O=C(O[C@H]1CCCN(Cc2ccccn2)C1)[C@@H]1CCCCN1c1nc2ccccc2o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.