(S)-1-[(2R,5S,7R,8S)-2-Butyl-7-(2-hydroxy-ethyl)-8-methyl-1,6-dioxa-spiro[4.5]dec-2-yl]-ethane-1,2-diol

succinic acid 3-butyl-8-[6-(tert-butyl-dimethyl-silanyloxy)-8-hydroxy-3,7-dimethyl-octa-2,4-dienyl]-9-methyl-2-[3-methyl-4-(2-trimethylsilanyl-ethoxycarbonyl)-buta-1,3-dienyl]-1,7-dioxa-spiro[5.5]undec-3-yl ester 2-trimethylsilanyl-ethyl ester

Succinic acid (2S,3R,6S,8R,9S)-3-butyl-8-[(2E,4E)-(6S,7S)-6-(tert-butyl-dimethyl-silanyloxy)-8-hydroxy-3,7-dimethyl-octa-2,4-dienyl]-2-ethynyl-9-methyl-1,7-dioxa-spiro[5.5]undec-3-yl ester 2-trimethylsilanyl-ethyl ester