Using COc1ccccc1CNCC1(c2ccccc2)CCN(C(=O)OC(C)(C)C)CC1 to produce COc1ccccc1CNCC1(c2ccccc2)CCNCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.