Using CI, Cc1sc2ncnc(OC3CCC(NC(=O)OC(C)(C)C)CC3)c2c1C to produce Cc1sc2ncnc(OC3CCC(N(C)C(=O)OC(C)(C)C)CC3)c2c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.