Using CC(C)C(=O)Nc1nc(O)c2cn[nH]c2n1, COC(=O)CBr to produce COC(=O)Cc1n[nH]c2nc(NC(=O)C(C)C)nc(O)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.