Using CS(=O)(=O)Cl, CCOC(=O)[C@H](N)CC(CO)C(=O)OC(C)(C)C to produce CCOC(=O)[C@H](N)CC(COS(C)(=O)=O)C(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.