5-Hexenoic acid, 4-methoxy-2-(methoxymethylene)-3-methyl-6-phenyl-, methyl ester, (2E,3R*,4R*,5E)-(-)- 5-Hexenoic acid, 4-methoxy-2-(methoxymethylene)-3-methyl-6-phenyl-, methyl ester, (S-(R*,R*-(E,E)))- 73341-71-6 Oudemansin Oudemansin B