Using BrCCC[P+](c1ccccc1)(c1ccccc1)c1ccccc1, Cn1ccnc1 to produce Cn1cc[n+](CCC[P+](c2ccccc2)(c2ccccc2)c2ccccc2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.