Using CCOC(=O)CCCc1oc2cc(O)cc(O)c2c(=O)c1-c1ccc(OC)cc1 to produce COC(=O)CCCc1oc2cc(O)cc(O)c2c(=O)c1-c1ccc(O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.