Using CCC1OC(=C2C(=O)Nc3ccc(F)cc32)c2cnc(Cl)cc21 to produce CCC1OC(=C2C(=O)Nc3ccc(F)cc32)c2cnccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.