Using COCOc1ccc(CCC(=O)c2c(OCOC)cc(OCOC)c(CCC(C)C)c2O)cc1OC to produce COc1cc(CCC(=O)c2c(O)cc(O)c(CCC(C)C)c2O)ccc1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.