Using Cc1cc(Cl)ccc1NC(=O)Nc1cn(Cc2ccc(C(F)(F)F)cc2)c(C(=O)O)n1, NCCO to produce Cc1cc(Cl)ccc1NC(=O)Nc1cn(Cc2ccc(C(F)(F)F)cc2)c(C(=O)NCCO)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.