Using COC(=O)c1ccc2cc(OCc3ccccc3)c(C(=O)OC)cc2c1 to produce O=C(O)c1ccc2cc(OCc3ccccc3)c(C(=O)O)cc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.