2-Butenoic acid, 2-methyl-, 2-(((1-(acetyloxy)-2,3,5,7a-tetrahydro-1H-pyrrolizin-7-yl)methoxy)carbonyl)-2-hydroxy-1,3-dimethylbutyl ester, (1R-(1alpha,7(1(E),2S*),7abeta))- 80405-17-0