1-Methyl-4-(1-propyl-3-piperidinyl)-1H-indole ethanedioate (1:1) 1-Methyl-4-(1-propyl-3-piperidyl)-1H-indole oxalate 1H-Indole, 1-methyl-4-(1-propyl-3-piperidinyl)-, ethanedioate (1:1) 82439-12-1