You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S,4S,5R)-2-(4-amino-2-oxopyrimidin-1-yl)-4-hydroxy-5-(hydroxymethyl)oxolane-2-carbonitrile is the IUPAC name of a molecule. Please give its molecular formula.
user
C10H12N4O4
assistant