1-[9-[3-(9H-carbazol-4-yloxy)-2-hydroxypropyl]carbazol-4-yl]oxy-3-[2-(2-methoxyphenoxy)ethylamino]propan-2-ol; 1-(9H-Carbazol-4-yloxy)-3-[4-[2-hydroxy-3-[[2-(2-methoxyphenoxy)ethyl]amino]propoxy]-9H-carbazol-9-yl]propan-2-ol; [3-(9H-Carbazol-4-yloxy)-2-hydroxy]propyl Carvedilol; (9H-Carbazol-4-yloxy)-3-[4-[2-hydroxy-3-[[2-(2-methoxyphenoxy)ethyl]amino]propoxy]-9H-carbazol-9-yl]propan-2-ol;α-[(9H-Carbazol-4-yloxy)methyl]-4-[2-hydroxy-3-[[2-(2-methoxyphenoxy)ethyl]amino]propoxy]-9H-carbazole-9-ethanol