Using COc1ccc(C=CC(=O)Nc2ccccc2C(=O)[O-])cc1OC to produce COc1ccc(C=CC(=O)Nc2ccccc2C(=O)O)cc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.