2-Propenoic acid, 2-methyl-, 3-((acetyloxy)methyl)-2,4,5,6,7,8,9,10-octahydro-6,7-dihydroxy-6,10-dimethyl-2-oxo-7,10-epoxycyclodeca(b)furan-4-yl ester, (4S-(4R*,6S*,7S*,10R*,11E))- 76248-63-0 NSC 306215 PIPTOCARPHIN A