Using CSC1C(=O)Nc2c(C(=O)c3ccc(F)cc3)cc(Cl)cc21 to produce O=C1Cc2cc(Cl)cc(C(=O)c3ccc(F)cc3)c2N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.