Using CSCC[C@@H](NC(=O)OC(C)(C)C)C(=O)O, COc1ccc(CN)cc1OC to produce COc1ccc(CNC(=O)[C@@H](CCSC)NC(=O)OC(C)(C)C)cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.