3,6,7,8-Tetramethyl-4-isobutyl-2-carboethoxy-6H-pyrrolo-3,2,5-indolizine 6H-Pyrrolo(3,2-f)indolizine-2-carboxylic acid, 3,6,7,8-tetramethyl-4-(2-methylpropyl)-, (2S-cis)- 81384-50-1 Pyrroloindolizine Pyrroloindolysin