Using OCCNc1ncccn1, O=C(O)C(O)(c1ccccc1)C1CCCCC1 to produce O=C(OCCNc1ncccn1)C(O)(c1ccccc1)C1CCCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.