1H-Indole, 5-methoxy-3-(1,2,3,6-tetrahydro-1-propyl-4-pyridinyl)-, (E)-2-butenedioate (2:1) 5-Methoxy-3-(1,2,3,6-tetrahydro-1-propyl-4-pyridinyl)-1H-indole (E)-2-butenedioate (2:1) 72808-66-3