Using CC(C)(C)OC(=O)N(Cc1ccc(Cl)c(C=O)c1)CC(F)F, NC1CC1 to produce CC(C)(C)OC(=O)N(Cc1ccc(Cl)c(CNC2CC2)c1)CC(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.