Using NCCOCCO, Cn1c(Nc2nc3ccc(OC(F)(F)F)cc3s2)nc2ccc(C(=O)O)cc21 to produce Cn1c(Nc2nc3ccc(OC(F)(F)F)cc3s2)nc2ccc(C(=O)NCCOCCO)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.