The molecule is a 5-fluorocytidine 5'-monophosphate that results from the removal of two protons from the phosphate group; major species at pH 7.3.
[(2R,3S,4R,5R)-5-(4-amino-5-fluoro-2-oxopyrimidin-1-yl)-3,4-dihydroxyoxolan-2-yl]methyl phosphate