Using CCO, CO[C@@H]1CN(C(=O)OC(C)(C)C)C[C@H]1C#N to produce CO[C@@H]1CN(C(=O)OC(C)(C)C)C[C@H]1CN, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.