Using O=C([O-])[O-], CC(C)(C)OC(=O)N1CCc2oc3c(O)cc(S(=O)(=O)c4ccccc4)cc3c2C1 to produce COc1cc(S(=O)(=O)c2ccccc2)cc2c3c(oc12)CCN(C(=O)OC(C)(C)C)C3, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.