Using CN(CC[C@H]1CC[C@H](CCCOS(C)(=O)=O)CC1)C(=O)OC(C)(C)C to produce CNCC[C@H]1CC[C@H](CCCOS(C)(=O)=O)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.