Using CS(=O)(=O)Cl, CCOC(=O)[C@@H]1C[C@@H]2C[C@H](O)CC[C@H]2CN1C(=O)OC to produce CCOC(=O)[C@@H]1C[C@@H]2C[C@H](OS(C)(=O)=O)CC[C@H]2CN1C(=O)OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.