Using Cc1nc(N)nc(N2CCCC(NC(=O)OC(C)(C)C)C2)c1C#Cc1ccc(N)nc1 to produce Cc1nc(N)nc(N2CCCC(N)C2)c1C#Cc1ccc(N)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.