3-(2-Methylpiperidino)-1-propyl 1,2,3,4-tetrahydro-6-carbazolylcarboxylate hydrochloride 5,6,7,8-Tetrahydrocarbazole-3-carboxylic acid 3-(2-methylpiperidino)propyl ester HCl Carbazole-3-carboxylic acid, 5,6,7,8-tetrahydro-, 3-(2-methylpiperidino)propyl ester, hydrochloride FE5844000