Using COC(=O)c1ccc(C=Cc2ccc(F)cc2)c(C(=O)OC)c1 to produce COC(=O)c1ccc(CCc2ccc(F)cc2)c(C(=O)OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.