Using Cc1nc(-c2ccc(Cl)cc2)oc1COC(C)(C)C(=O)O to produce Cc1nc(-c2ccc(Cl)cc2)oc1COC(C)(C)C(=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.