Using COc1cc(C=CC(=O)C(C)C(=O)C=Cc2ccc(O)c(OC)c2)ccc1O to produce COc1cc(CCC(=O)C(C)C(=O)CCc2ccc(O)c(OC)c2)ccc1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.