rhamnetin-3-O-(2''-O-mannopyranosyl)allopyranoside

3-[(2S,3R,4R,5R,6R)-4,5-dihydroxy-6-(hydroxymethyl)-3-[(2S,3S,4S,5R,6R )-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-oxan-2-yl]oxy-2-(3,4 -dihydroxyphenyl)-5-hydroxy-7-methoxy-chromen-4-one