Using COc1ccc(C2CCN(C(=O)OC(C)(C)C)CC2O)cc1, O=S1(=O)OCCO1 to produce COc1ccc(C2CCN(C(=O)OC(C)(C)C)CC2OCCO)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.