Using COC(=O)CCc1cc(-c2cncc(OC[C@@H]3CCN3C(=O)OC(C)(C)C)c2)on1 to produce COC(=O)CCc1cc(-c2cncc(OC[C@@H]3CCN3)c2)on1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.