Using Cc1noc(-c2ccc(Br)cc2)c1C[P+](c1ccccc1)(c1ccccc1)c1ccccc1, CC(CC=O)c1ccccc1 to produce Cc1noc(-c2ccc(Br)cc2)c1C=CCC(C)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.