(2S,3S,4S,5R)-oxane-2,3,4,5-tetrol (2S,3S,4S,5R)-tetrahydropyran-2,3,4,5-tetrol CHEBI:28543 alpha-D-Lyx alpha-D-lyxopyranose ZINC03861573 alpha-D-Lyxoside C02204 alpha-D-Lyxose CHEBI:28539 alpha-D-lyxosides