Using CN(Cc1ccccc1)c1ccn(CCc2ccc(CO)cc2)c(=O)c1, BrP(Br)Br to produce CN(Cc1ccccc1)c1ccn(CCc2ccc(CBr)cc2)c(=O)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.