Using O=C(c1ccc(O)cc1)c1c(-c2ccccc2)oc2ccccc12, BrCCCCBr to produce O=C(c1ccc(OCCCCBr)cc1)c1c(-c2ccccc2)oc2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.