(1R,2R)-1-[2-(tert-Butyl-dimethyl-silanyloxymethyl)-4,6-dimethoxy-phenyl]-2-(6,6,8-trimethyl-1,4-dithia-spiro[4.5]dec-7-en-7-yl)-ethane-1,2-diol

tert-Butyl-{2-[(4R,5R)-2,2-dimethyl-5-(6,6,8-trimethyl-1,4-dithia-spiro[4.5]dec-7-en-7-yl)-[1,3]dioxolan-4-yl]-3,5-dimethoxy-benzyloxy}-dimethyl-silane