diethoxyphosphoryl-acetic acid ethyl ester
(-)-methyl (2S,3aS,5R,11bR)-3-benzyl-2,3,3a,4,5,7-hexahydro-3,5-ethano-12-(E)-<(methoxycarbonyl)methylene>-1H-pyrrolo<2,3-d>carbazole-6-carboxylates
(-)-methyl (2S,3aS,5R,11bR)-3-benzyl-2,3,3a,4,5,7-hexahydro-3,5-ethano-12-(Z)-<(methoxycarbonyl)methylene>-1H-pyrrolo<2,3-d>carbazole-6-carboxylates