(+)-1,4-anhydro-3-{(R)-[(tert-butyl)dimethylsilyloxy][(3aS,4aS,7aS,7bR)-3a,4a,7a,7b-tetrahydro-6,6-dimethyl[1,3]dioxolo[4,5]furo[2,3-d]isoxazol-3-yl]methyl}-3-deoxy-2,6-bis-O-(methoxymethyl)-α-D-galactopyranose