Using CCOC(=O)c1csc(Br)n1, CC1(C)OB(c2c(F)cccc2F)OC1(C)C to produce CCOC(=O)c1csc(-c2c(F)cccc2F)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.