Using O=C([O-])c1cc2c(-c3ccnc(F)c3)nccc2n1CCOc1ccc(OC(F)(F)F)cc1, NCCO to produce O=C(O)c1cc2c(-c3ccnc(NCCO)c3)nccc2n1CCOc1ccc(OC(F)(F)F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.