Using CC(C)(C)OC(=O)N[C@@H](CO)Cc1ccc(-c2cccc(Cl)c2)cc1 to produce CC(C)(C)OC(=O)N[C@@H](C=O)Cc1ccc(-c2cccc(Cl)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.