1,3-Dioxolane-4-heptanoic acid, 5-(1-hydroxy-2,4,6-heptatriynyl)-2-oxo-, methyl ester, (4S-(4-alpha,5-beta(S*)))- 115216-95-0 BRN 4271675 EV-22 methyl ester L 663992 Sch 31828 methyl ester