Using O=C(O)c1ccc2c(c1)C(=O)c1ccc(C(=O)O)cc1C2=O to produce O=C([O-])c1ccc2c(c1)C(=O)c1ccc(C(=O)[O-])cc1C2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.