184691-61-0 1H-Pyrido(3,4-b)indole-6-carboxamide, 2,3,4,9-tetrahydro-N,N-diethyl-1-oxo- 2,3,4,9-Tetrahydro-N,N-diethyl-1-oxo-1H-pyrido(3,4-b)indole-6-carboxamide