(2s,3r,4s,5r,6r)-2-[2-(3,4-dihydroxyphenyl)-7-hydroxy-3-[(2s,3r,4s,5r,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxychromenylium-5-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol;chloride