Using CC(C)[Si](c1ncc(B2OC(C)(C)C(C)(C)O2)o1)(C(C)C)C(C)C, CCOC(=O)c1cnc2c(Br)cc(F)cn12 to produce CCOC(=O)c1cnc2c(-c3cnco3)cc(F)cn12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.