Using CC(=O)Oc1ccc(C2=CC(=O)c3ccccc3S2(=O)=O)cc1 to produce O=C1C=C(c2ccc(O)cc2)S(=O)(=O)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.