Using CC(C)(C)OC(=O)Nc1cc(F)c(OCc2ccccc2)c(F)c1C(=O)O to produce Nc1cc(F)c(OCc2ccccc2)c(F)c1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.