Using CCOC(=O)c1cc(NC(=O)c2ccccc2C(F)(F)F)cc2c1OCC2 to produce O=C(Nc1cc2c(c(C(=O)O)c1)OCC2)c1ccccc1C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.