Using COc1ccc(COc2c(Cc3ccc(OC)cc3)ccc(C(=O)[O-])c2OCc2ccc(OC)cc2)cc1 to produce COc1ccc(COc2cccc(C(=O)O)c2OCc2ccc(OC)cc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.