(4aR,4'R,8R,8aR)-2,2-di-tert-butyl-4'-((E)-4-methoxybut-2-en-1-yl)-8-((triisopropylsilyl)oxy)tetrahydro-4H-spiro[pyrano[3,2-d][1,3,2]dioxasiline-6,2'-[1,3]dioxolane]

(E)-(R)-6-Methoxy-hex-4-ene-1,2-diol