101564-58-3 2-Methyl-3-quinuclidyl isopropyl(3-methyl-but-1-yn-3-enyl)glycolate HEXA-3-YN-5-ENOIC ACID, 2-HYDROXY-2-ISOPROPYL-5-METHYL-, 2-METHYL-3-QUINUCLIDINY Hexa-3-yn-5-enoic acid, 2-hydroxy-2-isopropyl-5-methyl-, 2-methyl-3-quinuclidinyl ester