Using COC(=O)c1cc(OC(C)=O)c2cc(OC)c3ccccc3c2c1C to produce COC(=O)c1cc(O)c2cc(OC)c3ccccc3c2c1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.