Using CC(Nc1ccccc1C(=O)Nc1ccc2c(c1)CN(C(=O)OC(C)(C)C)CC2(C)C)c1ccnc(N)n1 to produce CC(Nc1ccccc1C(=O)Nc1ccc2c(c1)CNCC2(C)C)c1ccnc(N)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.