(R)-2-((4S,5S,6S)-6-((S)-1-(1,3-dithiolan-2-yl)ethyl)-2,2-di-tert-butyl-5-methyl-1,3,2-dioxasilinan-4-yl)propan-1-ol

(S)-2-((4R,5S,6S)-6-((S)-1-(1,3-dithiolan-2-yl)ethyl)-2,2-di-tert-butyl-5-methyl-1,3,2-dioxasilinan-4-yl)-1-((3aR,6S,7aS)-8,8-dimethyl-2,2-dioxidotetrahydro-3H-3a,6-methanobenzo[c]isothiazol-1(4H)-yl)propan-1-one