[2-(4-methoxycarbonylpiperidin-1-yl)-2-oxoethyl] 6,7,8,9-tetrahydro-5H-carbazole-3-carboxylate [2-(4-methoxycarbonyl-1-piperidyl)-2-oxo-ethyl] 6,7,8,9-tetrahydro-5H-carbazole-3-carboxylate 6,7,8,9-tetrahydro-5H-carbazole-3-carboxylic acid [2-(4-methoxycarbonyl-1-piperidinyl)-2-oxoethyl] ester 6,7,8,9-tetrahydro-5H-carbazole-3-carboxylic acid [2-(4-carbomethoxy-1-piperidyl)-2-keto-ethyl] ester [2-(4-methoxycarbonylpiperidin-1-yl)-2-oxo-ethyl] 6,7,8,9-tetrahydro-5H-carbazole-3-carboxylate ZINC04890122