Using Cc1cccc(Nc2nc(N3CCCCC3CNC(=O)OC(C)(C)C)nc3c2C(=O)NC3)c1 to produce Cc1cccc(Nc2nc(N3CCCCC3CN)nc3c2C(=O)NC3)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.