1H-Indole, 4-(1,2,5,6-tetrahydro-1-methyl-3-pyridinyl)-, ethanedioate (2:1) 4-(1,2,5,6-Tetrahydro-1-methyl-3-pyridinyl)-1H-indole ethanedioate (2:1) 4-(1-Methyl-1,2,5,6-tetrahydropyridin-3-yl)-1H-indole oxalate 83363-31-9