You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule [1-[[[(2R,5R)-5-(4-amino-2-methylidenepyrimidin-1-yl)-4,4-difluoro-3-hydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-hydroxyphosphoryl]-1-hydroxy-3-[methyl(pentyl)amino]propyl]phosphonic acid .
user
C19H35F2N4O12P3
assistant