You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(3S,4S)-4-[2-(1H-imidazol-5-yl)imidazol-1-yl]oxolan-3-yl]-N,N-dimethylmethanesulfonamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C13H19N5O3S
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