(2S,3R,4S,5R)-1-benzoyloxy-3,4-dihydroxy-5-(4-methoxybenzyloxy)-2,4-dimethylheptane

(2R,3R,4R,5R)-3,4-O-isopropylidene-5-(4-methoxybenzyloxy)-2,4-dimethylheptanal