1-Benzopyrylium, 5-(b-D-glucopyranosyloxy)-7-hydroxy-2-(4-hydroxy-3,5-dimethoxyphenyl)-3-[[6-O-[3-(4-hydroxyphenyl)-1-oxo-2-propen-1-yl]-b-D-glucopyranosyl]oxy]-, chloride(1:1)