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2,3,5,4'-tetrahydroxystilbene-2-O-(2''-O-feruloyl)-b-D-glucopyranoside, 2,3,5,4'-tetra hydroxystilbene-2-O-(2''-O-p-coumaroyl)-b-D-glucopyranoside were isolated from Radix Polygoni multiflori Preparata. Structures were elucidated