Using COc1cc(/C=C/c2ccc(OC)c(OC(C)=O)c2)cc(OC)c1 to produce COc1cc(/C=C/c2ccc(OC)c(O)c2)cc(OC)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.