128637-87-6 2-Azabicyclo(2.2.2)octane-5-butanoic acid, 5-hydroxy-beta,2-dimethyl-, (1R-(1alpha,4alpha,5alpha,5(S*)))- 2-Azabicyclo(2.2.2)octane-5-butanoic acid, beta,2-dimethyl-5-hydroxy-, (1R-(1-alpha,4-alpha,5-alpha,5(S*)))- Dioscoretin Dioscoretine