Using CC1C[C@H]2CN(C(=O)OC(C)(C)C)[C@H](CNCc3ccccc3)[C@H]2C1 to produce CC1C[C@H]2CN(C(=O)OC(C)(C)C)[C@H](CN)[C@H]2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.