bis(2,2,2-trifluoroethyl) (4-((tert-butyldimethylsilyl)oxy)-2-oxobutyl)phosphonate

(8Z,10S,11S,12S,13Z,16S,17R)-17-((2R,3S,4S)-3-(4-methoxybenzyloxy)-4-methyloctan-2-yl)-11-(methoxymethyloxy)-2,2,3,3,10,12,14,16,19,19,20,20-dodecamethyl-4,18-dioxa-3,19-disilahenicosa-8,13-dien-7-one