Using CCOC(=O)c1ccc(C(CC2CCOCC2)c2ccc(S(=O)(=O)C3CC3)cc2)[nH]1 to produce O=C(O)c1ccc(C(CC2CCOCC2)c2ccc(S(=O)(=O)C3CC3)cc2)[nH]1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.