Using CC(C)C[C@H](Nc1nonc1-c1ccc(N2CCN(C(=O)OC(C)(C)C)CC2)cc1)C(=O)NCC#N to produce CC(C)C[C@H](Nc1nonc1-c1ccc(N2CCNCC2)cc1)C(=O)NCC#N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.