(6R,6aR,9R)-methyl 7-ethyl-6,6a,9,10,12,13-hexahydro-5H-6,9-methanopyrido[1',2':1,2]azepino[4,5-b]indole-6-carboxylate (2R,3R)-2,3-dihydroxysuccinate
(6R,6aR,9R)-methyl 7-ethyl-6,6a,9,10,12,13-hexahydro-5H-6,9-methanopyrido[1',2':1,2]azepino[4,5-b]indole-6-carboxylate (2R,3R)-2,3-dihydroxysuccinate