Using CCOC(=O)[C@H](CCc1ccccc1)NC(=O)C1(NC(=O)[C@H](Br)C2CCOCC2)CCCC1, CC([O-])=S to produce CCOC(=O)[C@H](CCc1ccccc1)NC(=O)C1(NC(=O)[C@@H](SC(C)=O)C2CCOCC2)CCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.