Using C1COCCO1, CC(C)n1nc(-c2nc(C#N)c(N)nc2-c2ccccc2Br)ccc1=O to produce CC(C)n1nc(-c2nc(C(N)=O)c(N)nc2-c2ccccc2Br)ccc1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.