2-(2,8-Dimethoxy-5,6-dihydro-11H-benzo[a]carbazol-11-yl)-N,N-dimethylethanamine AIDS-151198 AIDS151198 N-(2-(2,8-Dimethoxy-5,6-dihydro-11H-benzo[a]carbazol-11-yl)ethyl)-N,N-dimethylamine NSC690783