Using CCOC(=O)CBr, N[C@@H]1C(=O)Nc2ccccc2S[C@H]1c1ccccc1 to produce CCOC(=O)CN1C(=O)[C@@H](N)[C@H](c2ccccc2)Sc2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.