Using CC(C)(O)c1cc(Br)cnc1N, C=CC(=O)OC(C)(C)C to produce CC(C)(C)OC(=O)/C=C/c1cnc(N)c(C(C)(C)O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.