Using CC(C)(C)OC(=O)Nc1cc(F)cc2c1ccn2Cc1ccc(Cl)cc1, O=C=O to produce CC(C)(C)OC(=O)Nc1cc(F)cc2c1ccn2C(C(=O)O)c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.