Using C=Cc1ccc(C(=O)O)cc1, Oc1c(F)c(F)c(F)c(F)c1F to produce C=Cc1ccc(C(=O)Oc2c(F)c(F)c(F)c(F)c2F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.