You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(2R,3R,4S)-3-amino-4-hydroxy-3-methyloxolan-2-yl]-1,3-diazinane-2,4-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C9H15N3O4
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