Using CCN=C=NCCCN(C)C, CC(C)(C)OC(=O)NCc1ccc(F)cc1C(=O)O to produce CC(C)(C)OC(=O)NCc1ccc(F)cc1C(N)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.