Showing structure for 2-hydroxy-2-(2-methoxy-5,6-dimethyl-4-methylideneoxan-2-yl)-n-{8-methoxy-7,7-dimethyl-6-[(6-oxooxan-2-yl)methyl]-hexahydropyrano[3,2-d][1,3]dioxin-4-yl}ethanimidic acid