(2R,3R)-2-((1S,2R)-2,4-Bis-benzyloxy-1-methyl-butyl)-5-methoxy-tetrahydro-furan-3-carbaldehyde

(R)-1-((3aS,5S,6R,6aS)-2,2,6-Trimethyl-tetrahydro-furo[2,3-d][1,3]dioxol-5-yl)-ethane-1,2-diol