Using CCOC(OCC)OCC, COc1ccc(CC(=O)c2c(O)cc(OC)cc2OC)c(OC)c1 to produce COc1ccc(-c2coc3cc(OC)cc(OC)c3c2=O)c(OC)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.