Using CN(Cc1ccccc1)C(=O)C1(c2ccccc2)CCN(C(=O)OCc2ccccc2)CC1 to produce CN(Cc1ccccc1)C(=O)C1(c2ccccc2)CCNCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.