Using CCCCc1oc2ccccc2c1C(=O)c1ccc2c(Br)c(O)ccc2c1 to produce CCCCc1oc2ccccc2c1C(O)c1ccc2c(Br)c(O)ccc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.