Using O=C(NC(=O)c1c(F)cccc1F)Nc1cc(Cl)c(OC(F)(F)C(Cl)Cl)c(Cl)c1, CI to produce CN(C(=O)Nc1cc(Cl)c(OC(F)(F)C(Cl)Cl)c(Cl)c1)C(=O)c1c(F)cccc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.