Using CC(C)[Si](Cl)(C(C)C)C(C)C, O=[N+]([O-])c1cn(CCC(O)CO)c(Br)n1 to produce CC(C)[Si](OCC(O)CCn1cc([N+](=O)[O-])nc1Br)(C(C)C)C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.