You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(1S,5R)-3-(4-ethylthiadiazole-5-carbonyl)-7-oxo-3,6-diazabicyclo[3.2.2]nonan-6-yl]-N,N-dimethylacetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H23N5O3S
assistant