5-Fluoropolyoxin M 50355-68-5 beta-D-Allofuranuronic acid, 5-((2-amino-5-O-(aminocarbonyl)-2,3-dideoxy-L-erythro-pentonoyl)amino)-1,5-dideoxy-1-(3,4-dihydro-5-fluoro-2,4-dioxo-1(2H)-pyrimidinyl)-