Using CCOC(=O)C(=CNC1CC1)C(=O)c1ccc(F)c(Cl)c1F to produce CCOC(=O)c1cn(C2CC2)c2c(Cl)c(F)ccc2c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.