Using NCCCN1CCOCC1, O=C(O)c1ccc(/C=C/c2n[nH]c3ccccc23)cc1 to produce O=C(NCCCN1CCOCC1)c1ccc(/C=C/c2n[nH]c3ccccc23)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.