1-Methyl-3-propyl-3-(2-thienyl)pyrrolidine (E)-2-butenedioate 73604-74-7 N-Methyl propyl-3 (thienyl-2)-3 pyrrolidine fumarate [French] Pyrrolidine, 1-methyl-3-propyl-3-(2-thienyl)-, (E)-2-butenedioate