Methyl (7R,12R,13S)-13-(tert-Butyldiphenylsilyloxymethyl)-12,14-isopropylidenedioxy-3,5,7-trimethyltetradeca-2,4-dienoate

(2R,3R,8R,10E,12E)-3-Hydroxy-13-methoxycarbonyl-8,10,12-trimethyl-2-(triphenylmethoxymethyl)trideca-10,12-dienoic acid

(2R,3R,8R)-3-Hydroxy-8,10,12-trimethyl-2-(triphenylmethoxymethyl)tetradeca-10,12-dienedioic acid