Using CC(=O)NC[C@H]1CN(c2ccc(N3CCN(C(=O)OC(C)(C)C)CC3)nc2)C(=O)O1 to produce CC(=O)NC[C@H]1CN(c2ccc(N3CCNCC3)nc2)C(=O)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.