Using CC(C)(C)C(=O)/C(=C\c1ccc(Cl)cc1)n1cncn1 to produce CC(C)(C)C(O)/C(=C\c1ccc(Cl)cc1)n1cncn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.