Using OB(O)c1ccc(OCc2ccc(F)cc2)cc1, CCOC(=O)[C@@H](OC(C)(C)C)c1c(C)nc(C)c(Br)c1N1CCC(C)(C)CC1 to produce CCOC(=O)[C@@H](OC(C)(C)C)c1c(C)nc(C)c(-c2ccc(OCc3ccc(F)cc3)cc2)c1N1CCC(C)(C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.