10H-Benzo(e)pyrido(4,3-b)indol-10-yloxy, 7,8,9,11-tetrahydro-9,9,11,11-tetramethyl- 32890-80-5 5,6-Benzo-2,2,4,4-tetramethyl-1,2,3,4-tetrahydro-gamma-carboline-oxyl 5,6-Bttco 54637-03-5