1-Methyl-3-(2-propenyl)-3-(2-thienyl)pyrrolidine ethanedioate 73604-73-6 Allyl-3 N-methyl (thienyl-2)-3 pyrrolidine oxalate [French] Pyrrolidine, 1-methyl-3-(2-propenyl)-3-(2-thienyl)-, ethanedioate