Using CC(=O)[O-], COc1ccc2c(c1)C(C)(C)[C@H]1CCCN[C@H]1C2 to produce COc1ccc2c(c1)C(C)(C)[C@H]1CCCN(C(C)=O)[C@H]1C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.