Using O=S(=O)(c1ccccc1)c1cc(O)c2ccccc2c1O to produce O=C1C=C(S(=O)(=O)c2ccccc2)C(=O)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.