Using CN(C(=O)OC(C)(C)C)[C@@H]1CCCN(C(=O)OCc2ccccc2)C1 to produce CN(C(=O)OC(C)(C)C)[C@@H]1CCCNC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.