Using O=C(NC1CC(c2ccc(C(F)(F)F)cc2)CN(C(=O)Oc2ccc([N+](=O)[O-])cc2)C1)c1ccccc1, NCCO to produce O=C(NC1CC(c2ccc(C(F)(F)F)cc2)CN(C(=O)NCCO)C1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.