Using COc1ccc(SCC(=O)O)cc1OC, Oc1c(F)c(F)c(F)c(F)c1F to produce COc1ccc(SCC(=O)Oc2c(F)c(F)c(F)c(F)c2F)cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.