Using O=C(O)c1cccnc1, NCCCCOc1ccc(-c2ccc(=O)[nH]n2)cc1 to produce O=C(NCCCCOc1ccc(-c2ccc(=O)[nH]n2)cc1)c1cccnc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.