23116-76-9 5-Pyrimidinecarboxylic acid, 1-(5-((2-amino-5-O-(aminocarbonyl)-2-deoxy-L-xylonoyl)amino)-6-C-(2-carboxy-3-ethylidene-1-azetidinyl)-5-deoxy-beta-D-allo-hexodialdo-1,4-furanosyl)-1,2,3,4-tetrahydro-2,4-dioxo-, (S-(E))- 5-Pyrimidinecarboxylic acid, 1-(5-(2-amino-2-deoxy-L-xylonamido)-5-((2-carboxy-3-ethylidene-1-azetidinyl)carbonyl)-5-deoxy-beta-D-ribofuranosyl)-1,2,3,4-tetrahydro-2,4-dioxo-, monocarbamate (ester) Polyoxin F