Using NCCN1CCOCC1, O=C(O)C1CCCN(c2ncnc3scc(-c4ccccc4)c23)C1 to produce O=C(NCCN1CCOCC1)C1CCCN(c2ncnc3scc(-c4ccccc4)c23)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.