Using CCOC(=O)C(=CNc1ccc(F)cc1F)C(=O)c1cc(F)c(F)cc1Cl to produce CCOC(=O)c1cn(-c2ccc(F)cc2F)c2cc(F)c(F)cc2c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.