Using COC(=O)c1cc(Br)ccc1C[P+](c1ccccc1)(c1ccccc1)c1ccccc1, COc1cccc(C=O)c1C to produce COC(=O)c1cc(Br)ccc1C=Cc1cccc(OC)c1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.