Using CCOC(=O)C1(NC(=O)c2cc(Cl)cc(Cl)c2OC2CCC2)Cc2ccc(F)cc2C1 to produce O=C(NC1(C(=O)O)Cc2ccc(F)cc2C1)c1cc(Cl)cc(Cl)c1OC1CCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.