Using COC1=C(c2c(C)cc(C)cc2C)C(=O)C(Cc2ccc(F)cc2)C1 to produce Cc1cc(C)c(C2C(=O)CC(Cc3ccc(F)cc3)C2=O)c(C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.