Using CCOCC(C(=O)c1ccc(OC)cc1OC)c1ccc(OC)c(OC)c1 to produce C=C(C(=O)c1ccc(O)cc1O)c1ccc(O)c(O)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.