[(2R,3S,4S,5R,6S)-3,4,5,6-tetrahydroxyoxan-2-yl]methyl phosphate [(2R,3S,4S,5R,6S)-3,4,5,6-tetrahydroxytetrahydropyran-2-yl]methyl phosphate [(2R,3S,4S,5R,6S)-3,4,5,6-tetrahydroxy-2-tetrahydropyranyl]methyl phosphate