5,6-Dihydro-7H-benzo(c)carbazole-8-carboxylic acid 2-(diethylamino)ethyl ester hydrochloride 64709-48-4 7H-Benzo(c)carbazole-8-carboxylic acid, 5,6-dihydro-, 2-(diethylamino)ethyl ester, hydrochloride