Using CC(C)(C)CCC1(C=O)CCN(C(=O)OC(C)(C)C)C1, Fc1ccc2scc(Br)c2c1 to produce CC(C)(C)CCC1(C(O)c2csc3ccc(F)cc23)CCN(C(=O)OC(C)(C)C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.