Using COC1(CNC(=O)OC(C)(C)C)CCN(CCCCCC(=O)c2ccccc2)CC1 to produce COC1(CN)CCN(CCCCCC(=O)c2ccccc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.