Using CCOc1ccc(COc2ccc3c(c2)C=C(C(=O)OC)CCC3)cc1 to produce CCOc1ccc(COc2ccc3c(c2)C=C(C(=O)O)CCC3)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.