Using CC(C)(C)OC(=O)N1c2ncccc2CC1C(=O)[O-], Nc1c(F)cccc1F to produce CC(C)(C)OC(=O)N1c2ncccc2CC1C(=O)Nc1c(F)cccc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.