Using CC(C)(C)OC(=O)NCc1cc(C(=O)O)cc(Cl)c1F, C1COCCN1 to produce CC(C)(C)OC(=O)NCc1cc(C(=O)N2CCOCC2)cc(Cl)c1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.