Using Cc1ccc(NC(=O)NCc2cc(CN3CCN(C(=O)OC(C)(C)C)CC3)ccc2Cl)cn1 to produce Cc1ccc(NC(=O)NCc2cc(CN3CCNCC3)ccc2Cl)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.