You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R,3R,5R)-5-[4-amino-5-(1,3-oxazol-2-yl)pyrrolo[2,3-d]pyrimidin-7-yl]-4-fluoro-2-(hydroxymethyl)-4-methyloxolan-3-ol is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H16FN5O4
assistant