Showing structure for (2e)-n-[(2r)-1,5-dimethoxy-1,5-dioxopentan-2-yl]-3-[(2r,3s)-2-(4-hydroxy-3-methoxyphenyl)-3-(hydroxymethyl)-7-methoxy-2,3-dihydro-1-benzofuran-5-yl]prop-2-enimidic acid