Using O=C(O)c1cc2cc(Cl)ccc2[nH]1, NCCCCCn1ccnc1 to produce O=C(NCCCCCn1ccnc1)c1cc2cc(Cl)ccc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.