Using CS(=O)(=O)Cl, CC(C)COC(=O)NC[C@H](CCCO)NC(=O)OCC(C)C to produce CC(C)COC(=O)NC[C@H](CCCOS(C)(=O)=O)NC(=O)OCC(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.