Using COc1ccc2c(=O)n(C)c(CBr)c(-c3ccccc3)c2c1, OCCS to produce COc1ccc2c(=O)n(C)c(CSCCO)c(-c3ccccc3)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.