Using CCC1C(=O)c2c(cc(OC)c(Cl)c2Cl)C1c1ccccc1 to produce CCC1C(=O)c2c(cc(O)c(Cl)c2Cl)C1c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.