Using COc1cc([C@H]2CN3CCN(C(=O)OC(C)(C)C)C[C@H]3CO2)ccc1C#N to produce COc1cc([C@H]2CN3CCNC[C@H]3CO2)ccc1C#N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.