(3R,4S,5S,6R)-2-(4-chloro-3-(4-ethoxybenzyl)phenyl)-2-(((2S,3S,4R,5R,6S)-6-(4-chloro-3-(4-ethoxybenzyl)phenyl)-3,4,5-trihydroxytetrahydro-2H-pyran-2-yl)methoxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol