You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the SMILES representation of the molecule [[(2R,3S,4S)-5-(2,4-dioxopyrimidin-1-yl)-4-ethynyl-2-(fluoromethyl)-3-hydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl] phosphono hydrogen phosphate .
user