Using O, C=Cc1c(OCc2ccc(F)cc2F)c(Br)c(=O)n(-c2c(F)cccc2F)c1C to produce Cc1c(C(O)CO)c(OCc2ccc(F)cc2F)c(Br)c(=O)n1-c1c(F)cccc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.