Using CS(=O)(=O)Cl, C[C@@H](O)CN(C[C@H](C)NC(=O)OC(C)(C)C)C(=O)OCc1ccccc1 to produce C[C@H](CN(C[C@H](C)NC(=O)OC(C)(C)C)C(=O)OCc1ccccc1)OS(C)(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.