Using Cc1ccc2c(N3CCN(C(=O)OC(C)(C)C)CC3)ncnc2n1 to produce CC1CCc2c(ncnc2N2CCN(C(=O)OC(C)(C)C)CC2)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.