Using CC(C)C1(C)N=C(c2ncc(OC(F)F)cc2C(=O)O)NC1=O to produce CC(C)C1(C)N=C2c3ncc(OC(F)F)cc3C(=O)N2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.