2-(diethoxy-phosphoryl)-7-[6-(3-hydroxy-1-methoxymethoxy-1-methyl-propyl)-3-methoxymethoxy-3-methyl-tetrahydro-pyran-2-yl]-5-methyl-hept-4-enoic acid ethyl ester

7-[6-(3-acetoxy-1-methoxymethoxy-1-methyl-propyl)-3-methoxymethoxy-3-methyl-tetrahydro-pyran-2-yl]-2-(diethoxy-phosphoryl)-5-methyl-hept-4-enoic acid ethyl ester