(2R,3R,4S)-3-methoxymethoxy-2-[(1R)-1-methoxymethoxy-1-(3,4-methylenedioxyphenyl)methyl]-5-trityloxy-4-pentanolide

(2S,3R,4R,5R)-3,5-bis(methoxymethoxy)-5-(3,4-methylenedioxyphenyl)-4-pivaloyloxymethyl-1-trityloxy-2-pentanol