Using CC(C)(C)NC(=O)C1CCN(Cc2cccc(NC(=O)c3ccc(NC(=O)OC(C)(C)C)cn3)c2)CC1 to produce CC(C)(C)NC(=O)C1CCN(Cc2cccc(NC(=O)c3ccc(N)cn3)c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.