Using CCOC(=O)N1CCn2c(C#N)ccc2C12CCN(C(=O)OC(C)(C)C)CC2 to produce CCOC(=O)N1CCn2c(C#N)ccc2C12CCNCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.