Using CCOC(=O)CBr, Fc1ccccc1-c1noc2c(Cl)c(S)ccc12 to produce CCOC(=O)CSc1ccc2c(-c3ccccc3F)noc2c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.