You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 4-amino-1-[(3R)-3-amino-4-hydroxy-5-[(1S)-1-hydroxyethyl]-3-prop-1-ynyloxolan-2-yl]-5-fluoropyrimidin-2-one by IUPAC nomenclature, provide its molecular formula.
user
C13H17FN4O4
assistant