Showing structure for (2r)-n-[(4s,4as,6r,8s,8ar)-6-[(2r)-2,6-dihydroxyhexyl]-8-methoxy-7,7-dimethyl-hexahydropyrano[3,2-d][1,3]dioxin-4-yl]-2-hydroxy-2-[(2r,5r,6r)-2-methoxy-5,6-dimethyl-4-methylideneoxan-2-yl]ethanimidic acid