Using CCCc1ccc(C2CCC(C3CCC(C=O)CC3)CC2)cc1, BrC(Br)(Br)Br to produce CCCc1ccc(C2CCC(C3CCC(C=C(Br)Br)CC3)CC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.